CVE-2026-119618

Apache HTTP Server: mod_http2: heap corruption and RCE in assign_headers

Concurrent Execution using Shared Resource with Improper Synchronization vulnerability in Apache HTTP Server's mod_http2 in assign_headers() can lead to RCE. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.70. Affected releases of mod_h2 from GitHub: from 2.0.8 through 2.0.42.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Apache Apache Software Foundation Redhat

Products

Apache Http Server Http Server Apache Http Server and 4 more

CVE-2026-86829

Apache Airflow: Deserialization of task-controlled XCom values in the Scheduler during dependency evaluation

Apache Airflow's scheduler fully deserializes XCom values written by task code while evaluating task dependencies. A Dag author, who controls what a task writes to XCom, therefore controls data that is deserialized inside the scheduler process - a context the Airflow security model reserves for code installed by the Deployment Manager, above the worker-scoped execution capability a Dag author is documented to have. Deployments that treat Dag authors as less trusted than Deployment Managers are affected, and the scheduler must be evaluating a task dependency that reads a task-written XCom value. Users of apache-airflow are recommended to upgrade to version 3.4.0 or later, which restricts dependency evaluation to primitive XCom values.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Airflow

CVE-2026-82337

Apache Airflow: DeadlineAlert fields bypass plugin-registration gate for scheduler-side deserialization

Apache Airflow rebuilt deadline alert fields through generic deserialization, which imports and instantiates the class named in the serialized Dag, in the scheduler and API server. A Dag author could cause classes within Airflow's deserialization allow list to be constructed in those processes with arguments they control. Deployments whose Dags use deadline alerts are affected. This is an incomplete fix of CVE-2026-45360, which only hardened the `reference` field; deployments that applied that fix remain affected through the `callback` and `interval` fields. Users of apache-airflow are recommended to upgrade to 3.4.0 or later.

CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Airflow

CVE-2026-119078

Apache Commons Codec: Blake3 doFinalize is stateless; the documented KDF example derives identical keys

Apache Commons Codec's Blake3 class documented the output of its doFinalize methods as depending on any previously finalized bytes, so that consecutive calls would return different output. In fact, doFinalize does not change the hash state: calling it again without supplying more input returns the same bytes. The key-derivation example in the class Javadoc, shipped since 1.16.0, derives two keys with two consecutive doFinalize calls. Code that follows it gets identical keys, so the separation between the derived keys is lost. The same applies to any application that calls doFinalize more than once on one instance and expects new output each time. This issue affects Apache Commons Codec from 1.16.0 before 1.23.0. Version 1.23.0 corrects the documentation, but the behavior of doFinalize is unchanged. Upgrading alone does not fix affected code. Users should check their applications for repeated doFinalize calls on the same Blake3 instance and derive multiple keys by requesting the combined length in one call and splitting the output, as the updated Javadoc shows.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Commons Codec

CVE-2026-96285

Apache Airflow: Scheduler: next_kwargs deserialized before the dict check, so resume data still invokes constructors

Apache Airflow 3.3.1 shipped a fix for CVE-2026-67260 that checks the scheduler's decoded `next_kwargs` value is a dictionary, but performs that check only after deserializing the whole stored payload. Deserialization reconstructs nested objects of classes permitted by the deserialization allow-list — which by default includes Airflow's own classes — and runs their constructors inside the scheduler process before the check can reject the value. A Dag author, who controls a task's `next_kwargs` through the task execution API, can therefore still trigger constructor execution in the scheduler when the `awaiting_input` timeout sweep processes the task, and in the API server when the task instance is served to a worker using an older Execution API version; no non-default configuration is required. Versions before 3.3.0 are not affected. This is an incomplete fix for CVE-2026-67260: deployments that upgraded to 3.3.1 for that issue must also upgrade to apache-airflow 3.4.0 or later.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Airflow

CVE-2026-123753

Apache Axis2/Java: SSRF via WS-Addressing ReplyTo and FaultTo endpoints

Server-Side Request Forgery (SSRF) vulnerability in Apache Axis2/Java. An unauthenticated caller could supply a non-anonymous WS-Addressing wsa:ReplyTo or wsa:FaultTo address, and Axis2 would open a connection to that address to deliver the response or fault, allowing requests to internal hosts and delivery of response content to a host of the caller's choosing. From 2.0.2, decoupled responses are refused unless allowNonAnonymousResponseEndpoints is enabled, and enabled endpoints are restricted by scheme and screened at both the header-parsing and transport-selection layers. This issue affects Apache Axis2/Java: through 2.0.1. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Apache Axis2/java

CVE-2026-113508

Apache Airflow: Logout token revocation fails open; errors silently swallowed

Apache Airflow's logout endpoint attempted to revoke the presented token on the server, but any failure during revocation was silently ignored and logout still reported success. When the auth manager redirects logout to an external logout URL (for example the FAB or Keycloak auth managers), server-side revocation is the only thing that invalidates the Airflow token; it failed on database errors and, reliably, for tokens from an external issuer accepted via `[api_auth] trusted_jwks_url` whose token identifier is longer than 32 characters. Anyone holding a copy of a user's token from before logout could keep using it against the Airflow API until it expired. Users are advised to upgrade to apache-airflow 3.4.0 or later.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Airflow

CVE-2026-101031

Apache Airflow: Shell command injection in the example_dag_decorator example Dag via an IPv6 zone identifier

The `example_dag_decorator` example Dag shipped with Apache Airflow validated an IP address fetched over HTTP with Python's `ipaddress` module and then placed it into a shell command. `ipaddress` accepts IPv6 zone identifiers containing arbitrary characters, so when example Dags are loaded (`load_examples` enabled), a user who can trigger that Dag with a custom `url` parameter could point it at a server whose response injects shell commands run on the worker. This is an incomplete fix for CVE-2025-54941; users who upgraded for CVE-2025-54941 should upgrade again. Users are advised to upgrade to apache-airflow 3.4.0 or later, or to disable example Dags (`load_examples = False`), which is recommended for production.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Airflow

CVE-2026-82440

Apache Storm Nimbus: Submitter-Controlled Class Instantiation in Nimbus via a Fail-Open Scheduler Strategy Allowlist

Description Nimbus instantiates the class named by a topology's `topology.scheduler.strategy` when scheduling it. The allowlist intended to constrain that choice, `nimbus.scheduler.strategy.class.whitelist`, was treated as "allow any class" when unset, and it had no entry in the shipped `defaults.yaml`, so unset was the shipped state. An authenticated submitter could therefore cause Nimbus to instantiate any class on the Nimbus classpath that has a no-argument constructor. Storm's own production artifacts contain classes with side effects suitable for this: instantiating `org.apache.storm.testing.InProcessZookeeper` starts a ZooKeeper server with its own threads and sockets and nothing closes it, and `org.apache.storm.LocalCluster` behaves similarly. Repeated submissions therefore consume threads, sockets and memory in the most privileged daemon in the cluster. Mitigation Upgrade to 3.1.0, where an unset allowlist means the strategies shipped with Storm rather than any class. Note that this is a behaviour change: a cluster running an out-of-tree scheduler strategy without an explicit allowlist will have those topologies refused until the class is added to `nimbus.scheduler.strategy.class.whitelist`. The rejection message names the refused class and the configuration key. Users who cannot upgrade immediately should set `nimbus.scheduler.strategy.class.whitelist` explicitly to the strategies they intend to permit.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Storm Nimbus

CVE-2026-82436

Apache Storm Client: Deserialization of Untrusted Data from the State Store

Description `DefaultStateSerializer`, used to persist and restore stateful bolt checkpoints, configured Kryo with class registration disabled and an instantiation strategy that constructs objects without invoking their constructors, then deserialized whatever bytes the state store returned. A party able to write to the topology's keyspace in the state store, for example a co-tenant of a shared Redis instance or anyone with network access to it, could therefore place a serialized object graph that executes code inside the worker JVM when the state is restored. This requires the Redis-backed state provider, which is not the default. Write access to a state-store key is a data-plane privilege; code execution in the worker JVM is not, so the two are not equivalent. Mitigation Upgrade to 3.1.0, where the state serializer requires registered classes. Note that this is a behaviour change for existing state: checkpoints written by an affected version may fail to restore, and a migration step may be required. Users who cannot upgrade immediately should restrict network and credential access to the state store to the cluster itself. Credit The ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Storm Client

CVE-2026-40913

Apache Airflow: Import Errors API Leaks Unauthorized DAG Stack Traces via Incomplete Per-File RBAC Enforcement

Apache Airflow's public Import Errors API returns the raw parse-failure stack trace to any user with the `ImportError.can_read` permission when the failing file has no registered DAG. This happens when a file fails to parse before any DAG is defined, or when all of its previously registered DAGs are removed but the parse error remains. Users who should not see that file's details can read stack traces that may expose file paths and code. Users are advised to upgrade to Apache Airflow 3.4.0 or later, which restricts these stack traces to users with the new `IMPORT_ERRORS_ALL` permission.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Airflow

CVE-2026-123770

Apache Axis2/Java: Unbounded multipart and form-encoded request bodies

Allocation of Resources Without Limits or Throttling vulnerability in Apache Axis2/Java. The multipart/form-data and application/x-www-form-urlencoded message builders read the request body directly from the transport stream with no size limit, so the servlet container's post-size limit did not apply, and multipart temporary files were not deleted. An unauthenticated caller could exhaust memory or disk. Version 2.0.2 bounds these bodies with configurable limits and deletes temporary files. This issue affects Apache Axis2/Java: through 2.0.1. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Apache Axis2/java

CVE-2026-120761

Apache Axis2/Java: XML External Entity (XXE) injection via imported WSDL/XSD documents

Improper Restriction of XML External Entity Reference vulnerability in Apache Axis2/Java. When a client built an AxisService from a WSDL URL, through ServiceClient or AxisService.createClientSideAxisService, wsdl4j import resolution was enabled and the documents named by wsdl:import and xsd:import were parsed by wsdl4j's own XML parser, which processes DOCTYPE declarations and external entities. An attacker who controls a WSDL, or a document it imports, could therefore read local files or make the JVM issue network requests. This issue affects Apache Axis2/Java: through 2.0.1. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Apache Axis2/java

CVE-2026-118196

Apache Allura: OAuth1 rebinding

OAuth 1 rebinding vulnerability in Apache Allura. This issue affects Apache Allura: through 1.22.0. Users are recommended to upgrade to version 1.22.1, which fixes the issue.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Allura

CVE-2026-68982

Apache Airflow: CeleryExecutor: forged callback workloads run on Celery workers without workload-token validation

Apache Airflow's CeleryExecutor ran callback workloads (`ExecuteCallback`, used for deadline-alert callbacks) without validating the workload's authentication token. Anyone able to write to the Celery broker could enqueue a forged callback and execute arbitrary code on every CeleryExecutor worker, without Airflow credentials. Deployments using the CeleryExecutor are affected. Users are advised to upgrade to apache-airflow 3.4.0 or later, in which the worker claims the callback through the Execution API, validating the token, before running it.

CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Airflow

CVE-2026-111395

Apache Airflow: Reserved serialization keys in Dag run conf crash the scheduler or are rebuilt as objects in the Triggerer via deadline callbacks

Apache Airflow did not reject reserved serialization keys inside a Dag run's `conf`. A user allowed to trigger a Dag that uses a deadline alert with an asynchronous callback could pass a `conf` that, once the deadline was missed, either crashed the scheduler repeatedly or was rebuilt into objects inside the Triggerer. Users are advised to upgrade to apache-airflow 3.4.0 or later.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Airflow

CVE-2026-105153

Apache Roller: XML external entity processing in AtomPub entry parsing

Improper Restriction of XML External Entity Reference in Apache Roller 4.0 through 6.1.6 allows an authenticated user with no weblog permissions to read files readable by the Roller process and cause the server to issue outbound HTTP requests to attacker-chosen destinations, by submitting a crafted Atom entry to the AtomPub endpoint. The entry body is parsed with a parser configuration that permits external parameter entities and external DTD subsets, and the parse happens before any per-weblog authorization check and before any check of whether the AtomPub feature is enabled, so the endpoint is reachable by any authenticated account on a default installation. Users are recommended to upgrade to Apache Roller 6.1.7 or later, which parses AtomPub entries with a hardened XML configuration and rejects AtomPub requests while the feature is disabled.

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Roller

CVE-2026-118411

Apache Roller: Cross-site request forgery through GET requests to administrative actions

Cross-Site Request Forgery (CSRF) in Apache Roller 5.0.1 through 6.1.6 allows an unauthenticated attacker to create an administrator account if a logged-in Roller administrator opens a link that the attacker controls. The request-token check applied only to POST requests, and administrative actions also accepted GET requests. Users are recommended to upgrade to Apache Roller 6.1.7 or later, which requires POST and a valid token for actions that change data.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Roller

CVE-2026-83542

Apache OFBiz: Unauthenticated RCE via login-page widget injection

Improper Control of Generation of Code ('Code Injection') in Apache OFBiz 24.09 before 24.09.08 on all platforms allows a remote unauthenticated attacker to execute arbitrary code on the server by staging crafted widget XML in a multipart upload and overriding the mainDecoratorLocation used by a manager login route through an anonymous JSON request, causing OFBiz to load the staged XML through its live screen descriptor mechanism and evaluate an unsandboxed Groovy expression while rendering the authentication-failure page. Further validation established the following: -- The exploit does not require a malformed or incomplete multipart body: a well-formed multipart request that is kept in flight and then allowed to complete normally is sufficient. -- The screen loader reads the widget XML from a live process file descriptor while the upload is streaming, rather than from any file the attacker persists to disk. -- The same underlying issue is also reachable through the public, explicitly unauthenticated /sfa/control/editPortalPageColumnWidth route, returning command output directly in an HTTP 200 response — it is not limited to the login-failure rendering path used in the original report. The described vulnerability was discovered independantly twice, with each having a CVE assigned. See References. Users are recommended to upgrade to version 24.09.08, which fixes this issue.

CVSS 3.1 · 9.8 Critical EPSS 1.2% KEV · Not listed

Vendors

Apache Apache Software Foundation

Products

Ofbiz Apache Ofbiz

CVE-2026-68524

Apache OFBiz: Pre-Authentication Remote Code Execution via Attacker-Controlled Screen Definition Loading

An unauthenticated attacker can exploit temporary-file handling, access an open file descriptor, and inject a "file:" URI to cause OFBiz to load an attacker-controlled Screen definition. The described vulnerability was discovered independantly twice, with each having a CVE assigned. See References. This issue affects Apache OFBiz: before 24.09.08. Users are recommended to upgrade to version 24.09.08, which fixes the issue.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Apache Apache Software Foundation

Products

Ofbiz Apache Ofbiz