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CVE-2026-79651

Keycloak-services: keycloak-services: unauthenticated dos via unbounded locale caching

A flaw was found in the theme localization endpoints of the keycloak-services component, which is the core service responsible for authentication flows and theme management in Keycloak. The issue occurs because the system accepts arbitrary locale tags from unauthenticated requests and stores them in a permanent in-memory cache without limits. An attacker can exploit this by sending a large number of unique locale tags, eventually causing the server to run out of memory and crash.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Build Keycloak Red Hat Single Sign On
CVE-2026-87908

multiparty vulnerable to Denial of Service via unbounded part-header accumulation

multiparty is a Node.js library for parsing multipart/form-data request bodies. In versions from 2.1.0 up to but not including 4.3.1, the parser does not bound the amount of memory used while accumulating the headers of a single multipart part. An unauthenticated attacker can send a single request whose part carries a very large volume of header bytes, forcing the parser to buffer all of them and exhausting the process memory, which crashes the server. This is a denial of service with no confidentiality or integrity impact. The issue is fixed in multiparty 4.3.1, which caps the size of the accumulated part headers. Users should upgrade to multiparty 4.3.1 or later.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Multiparty
Products
Multiparty
CVE-2026-92114

a2ui-project a2ui Basic Catalog safe_regex.ts redos

A vulnerability was identified in a2ui-project a2ui up to 0.10.6. Affected is an unknown function of the file renderers/web_core/src/v0_9/basic_catalog/functions/safe_regex.ts of the component Basic Catalog. Such manipulation leads to inefficient regular expression complexity. The attack can be launched remotely.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
A2ui-project
Products
A2ui
CVE-2026-76821

OpenCTI: User-Controlled ReDoS in JSON Ingestion Mapper

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 7.260706.0, the JSON ingestion mapper's extractWithRegexp formula function compiled a user-supplied regular expression with the JavaScript RegExp engine in opencti-platform/opencti-graphql/src/parser/json-mapper.ts without validating its complexity. An authenticated user with JSON mapper creation permission could provide a catastrophically backtracking pattern and matching ingestion input, blocking the Node.js event loop and making the GraphQL API unavailable to all users. Scheduled ingestion could repeatedly execute the malicious mapper without additional attacker action, and recovery could require disabling the mapper and restarting the process. The issue affects availability and does not expose or modify data. This issue is fixed in version 7.260706.0.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Opencti-platform
Products
Opencti
CVE-2026-69209

Http4s: WebSocket decoder accepts unbounded message sizes

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, The shared WebSocket decoder permits unbounded message buffering because defragmentation accumulates fragments without a limit and FrameTranscoder accepts declared lengths up to Int.MaxValue. A remote client that completes a WebSocket handshake against an http4s-blaze-server or http4s-ember-server endpoint can exhaust server memory with oversized frames or fragmented messages. The patched decoder applies a configurable 64 MiB default limit to individual frames and defragmented messages through EmberServerBuilder.withMaxWebSocketMessageSize. This issue is fixed in versions 0.23.35 and 1.0.0-M47.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Http4s
Products
Http4s
CVE-2026-61554

emp3r0r has an unauthenticated HTTP Polling DoS

emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 4.2.5, the `http_poll` C2 transport accepts attacker-controlled HTTP polling sessions before CBOR `MsgAuth` authentication is completed. A remote unauthenticated attacker can create arbitrary polling sessions and send request bodies that are forwarded into the C2 dispatch path. This can consume server resources and trigger pre-auth C2 processing. Version 4.2.5 patches the issue.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Jm33-m0
Products
Emp3r0r
CVE-2026-45768

Suricata ldap: unbounded responses per transaction can lead to resource exhaustion

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, LDAP transaction state could store an unbounded number of responses. Because LDAP can be processed over UDP, crafted traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Version 8.0.5 contains a fix. As a workaround, disable LDAP application-layer parsing where it is not required. Alternatively, use a rule like `alert ldap any any -> any any (sid: 1; ldap.responses.count: >1024; bypass;)`.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Oisf
Products
Suricata
CVE-2026-45769

ikev2: unbounded client transform storage can lead to resource exhaustion

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5,IKEv2 parser state could grow without bounds while storing client transforms. Repeated crafted UDP traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Versions 7.0.16 and 8.0.5 fix the issue. Some workarounds are available. Disable IKE application-layer parsing if it is not needed. Alternatively, use a rule to bypass ike flows after the first packets like `alert ike any any -> any any (sid: 2; flow.pkts_toserver: > 256; bypass; noalert;)`.

CVSS 3.1 · 7.5 High EPSS 1.8% KEV · Not listed
Vendors
Oisf
Products
Suricata
CVE-2026-92356

a2ui-project a2ui Update Components basic_functions.ts updateComponents resource consumption

A vulnerability was determined in a2ui-project a2ui 0.9/0.9.1. This issue affects the function updateComponents of the file basic_functions.ts of the component Update Components. Executing a manipulation can lead to resource consumption. The attack can be launched remotely. The project was informed of the problem early through an issue report but has not responded yet.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
A2ui-project
Products
A2ui
CVE-2026-9338

IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities

IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to trigger excessive resource consumption, potentially leading to reduced availability of the affected service.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Ibm
Products
Websphere Application Server
CVE-2026-92362

ag-ui-protocol ag-ui SSE Frame sse.rs resource consumption

A vulnerability was detected in ag-ui-protocol ag-ui 1.0. This impacts an unknown function of the file crates/ag-ui-client/src/sse.rs of the component SSE Frame Parser. Performing a manipulation results in resource consumption. The attack is possible to be carried out remotely. The pull request to fix this issue awaits acceptance.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Ag-ui-protocol
Products
Ag-ui
CVE-2026-90927

filebrowser through 2.63.23 Denial of Service via unbounded WebSocket message

filebrowser through 2.63.23 fails to limit WebSocket message size in the /api/command handler before checking permissions, allowing authenticated users to buffer arbitrarily large messages. Attackers can send oversized WebSocket messages to exhaust server heap memory and cause denial of service regardless of EnableExec setting or Execute permission.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Filebrowser
Products
Filebrowser
CVE-2026-88975

Http4s: Ember HTTP/2 buffers a frame's declared payload before checking SETTINGS_MAX_FRAME_SIZE

Http4s is a Scala interface for HTTP services. Prior to 0.23.37 and 1.0.0-M48, Ember’s HTTP/2 read loop parses a frame’s 24-bit declared length but waits to buffer the entire payload before comparing it with SETTINGS_MAX_FRAME_SIZE. An unauthenticated peer can declare a payload near 16 MiB on a connection where Ember advertised 16 KiB and either complete or slowly stream it, causing up to 1024-fold memory amplification per connection before processFrame can reject the frame. The shared H2Connection.readLoop affects withHttp2 servers and clients, while HTTP/2-disabled configurations are unaffected, and the patch rejects oversized frames before buffering their payloads. This issue is fixed in versions 0.23.37 and 1.0.0-M48.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Http4s
Products
Http4s
CVE-2026-69202

Http4s Ember HTTP/2: unbounded inbound body buffering

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember’s HTTP/2 flow-control window is replenished according to bytes received from the network rather than bytes consumed by the application, while each stream stores DATA in an unbounded channel. A hostile peer can therefore send a body faster than a slow or non-draining application consumes it, retaining payloads in heap on an ember-server or ember-client configured with withHttp2. The patch bounds the per-stream H2Connection body channel so application consumption applies backpressure. This issue is fixed in versions 0.23.35 and 1.0.0-M47.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Http4s
Products
Http4s
CVE-2026-69203

Http4s Ember HTTP/2: does not enforce SETTINGS_MAX_CONCURRENT_STREAMS

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, An Ember server with HTTP/2 enabled through withHttp2 does not enforce SETTINGS_MAX_CONCURRENT_STREAMS for peer-created streams. One unauthenticated connection can open an unbounded number of streams, each retaining per-stream state until heap exhaustion. The same unchecked allocation is reachable in an ember-client through server-initiated PUSH_PROMISE frames because enablePush is not enforced. This issue is fixed in versions 0.23.35 and 1.0.0-M47.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Http4s
Products
Http4s
CVE-2026-53954

Bugsink: DOS using large numbers of event tags

Bugsink is a self-hosted error tracking tool. Prior to version 2.2.2, Bugsink stores every set of custom tags supplied with an incoming event, allowing a caller with a valid project DSN to submit an unusually large tag set and force excessive tag-row writes. Because Bugsink uses a single-writer database architecture, the expensive write transaction delays digestion of other events and causes a temporary ingestion denial of service. Version 2.2.2 applies the configurable MAX_EVENT_TAGS limit before storage. The impact is limited to availability for an instance accepting the event and does not expose stored data, modify existing events, or allow code execution. This issue is fixed in version 2.2.2.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Bugsink
Products
Bugsink
CVE-2026-12759

Multiple security vulnerabilities are addressed with IBM Cloud Pak for Business Automation iFixes for August 2026.

IBM Cloud Pak for Business Automation could allow an authenticated user to cause a denial of service due to uncontrolled resource consumption.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Ibm
Products
Cloud Pak For Business Automation
CVE-2026-89147

Net-SNMP through 5.9.5.2 Denial of Service via Blocking Unauthenticated SMUX Read

Net-SNMP through 5.9.5.2 contains a denial of service vulnerability in the SMUX module where smux_accept() performs an unauthenticated blocking read without timeout on newly accepted connections. An unauthenticated remote client can connect to the SMUX listener and send no data, causing the single-threaded snmpd main loop to block indefinitely and suspend all SNMP processing.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Net-snmp
Products
Net-snmp
CVE-2026-48987

pyLoad: Unbounded Memory Growth Leading to DoS and Potential DDoS in EventManager

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev101, EventManager in src/pyload/core/managers/event_manager.py appends a Client object to the clients list for each unique uuid submitted to the authenticated getEvents API endpoint, but get_events does not invoke the available clean method to remove inactive clients. An authenticated user can repeatedly submit unique UUID values, causing retained client objects and process memory to grow without bound even after requests stop. The resulting memory exhaustion can trigger an operating-system out-of-memory termination of pyLoad or host-wide instability and denial of service. This issue is fixed in version 0.5.0b3.dev101.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Pyload
Products
Pyload