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CVE-2026-111810

Apache Traffic Server: Unthrottled per-header diagnostic logging enables a log-flood denial of service

Apache Traffic Server 9.2.15, 10.1.4 and 10.2.0 write one unthrottled diagnostic log line for every internal @ header they strip, so a request carrying many such headers makes the proxy write far more log data than the request contains. This issue affects Apache Traffic Server: 9.2.15, 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation
Products
Apache Traffic Server Traffic Server Apache Traffic Server
CVE-2026-111805

Apache Traffic Server: HTTP/2 Content-Length truncation lets a client trigger backend worker-pool exhaustion

Apache Traffic Server can be used to exhaust an HTTP/1.1 origin's worker pool via a truncated HTTP/2 Content-Length value. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.

CVSS 4.0 · 7.7 High EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation
Products
Apache Traffic Server Traffic Server Apache Traffic Server
CVE-2026-109299

Open WebUI 0.9.0 before 0.11.4 Denial of Service via Recurrence Rule Validation

Open WebUI from 0.9.0 before 0.11.4 contains a denial of service vulnerability that allows authenticated users with automations permission to stall the instance by submitting unsatisfiable recurrence rules. Attackers can repeatedly send rules like February 30th to the automations create or update endpoints, blocking the shared event loop for seconds per request.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Openwebui
Products
Open Webui
CVE-2026-109298

Open WebUI 0.11.0 before 0.11.4 Memory Exhaustion via Knowledge Search Regex

Open WebUI 0.11.0 before 0.11.4 compiles user-chosen grep patterns for its knowledge and chat file search tools with a regex engine that expands nested counted repetition unbounded at compile time and caches the result. Authenticated users can have the model call grep_knowledge_files with short nested-repetition patterns, blocking the event loop and exhausting worker memory.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Openwebui
Products
Open Webui
CVE-2026-109297

Open WebUI 0.11.0 before 0.11.4 Denial of Service via Automation Recurrence Rules

Open WebUI 0.11.0 before 0.11.4 contains a denial of service vulnerability in the automation recurrence-rule validator, whose sub-daily frequency guard parses rule text more strictly than the calendar library that executes it. Users permitted to create automations can submit whitespace-folded rules (or, in 0.11.0, lowercase frequencies or omitted RRULE prefixes) that expand per-second synchronously, blocking the shared event loop for minutes per request and on every scheduler poll.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Open-webui Openwebui
Products
Open-webui Open Webui
CVE-2026-109294

Open WebUI 0.6.42 before 0.11.4 Memory Exhaustion via Compressed Remote Image

Open WebUI from 0.6.42 before 0.11.4 contains an uncontrolled resource consumption vulnerability that allows authenticated users to exhaust server memory by supplying compressed remote image URLs in chat messages. Attackers can point the image field at a host returning gzip-encoded responses, which get_image_base64_from_url decompresses unbounded, causing denial of service for all users.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Openwebui
Products
Open Webui
CVE-2026-115348

Mistune before 3.3.0 Quadratic-Time DoS via parse_link_text

Mistune from 3.0.0 before 3.3.0 contains an algorithmic complexity vulnerability in the inline link parser's parse_link_text function that allows unauthenticated attackers to exhaust CPU with unbalanced brackets. Attackers can submit Markdown containing many unbalanced '[' or '![' characters, forcing repeated unbounded forward scans and tying up worker processes for minutes.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Mistune Project
Products
Mistune
CVE-2026-91409

openjdk: Enhance QUIC connections (Oracle CPU 2026-10)

Vulnerability in Oracle Java SE (component: Networking). The supported version that is affected is Oracle Java SE: 27. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 3.7 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed
Vendors
Oracle
Products
Java Se Oracle Java Se
CVE-2025-59529

Avahi: simple protocol server ignores accepts unlimited connections and logs failures without limit

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions up to and including 0.9-rc5, the simple protocol server ignores the documented client limit and accepts unlimited connections, allowing for easy local DoS. Although `CLIENTS_MAX` is defined, `server_work()` unconditionally `accept()`s and `client_new()` always appends the new client and increments `n_clients`. There is no check against the limit. When client cannot be accepted as a result of maximal socket number of avahi-daemon, it logs unconditionally error per each connection. Unprivileged local users can exhaust daemon memory and file descriptors, causing a denial of service system-wide for mDNS/DNS-SD. Exhausting local file descriptors causes increased system load caused by logging errors of each of request. Overloading prevents glibc calls using nss-mdns plugins to resolve `*.local.` names and link-local addresses. As of time of publication, no known patched versions are available, but a candidate fix is available in pull request 808, and some workarounds are available. Simple clients are offered for nss-mdns package functionality. It is not possible to disable the unix socket `/run/avahi-daemon/socket`, but resolution requests received via DBus are not affected directly. Tools avahi-resolve, avahi-resolve-address and avahi-resolve-host-name are not affected, they use DBus interface. It is possible to change permissions of unix socket after avahi-daemon is started. But avahi-daemon does not provide any configuration for it. Additional access restrictions like SELinux can also prevent unwanted tools to access the socket and keep resolution working for trusted users.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Avahi
Products
Avahi
CVE-2026-79894

Unauthenticated Denial-of-Service (DoS) Vulnerability in the PAPI Protocol of AOS-8

An unauthenticated Denial-of-Service (DoS) vulnerability exists in the PAPI protocol of AOS-8. Successful exploitation of this vulnerability results in the ability to disrupt the availability of the affected interface.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Hpe
Products
Aos
CVE-2026-115390

Wasmtime 47.0.0 before 48.0.3 and 49.0.0 before 49.0.1 Fuel Accounting Bypass DoS

Wasmtime 47.0.0 before 48.0.3 and 49.0.0 before 49.0.1 contains a fuel accounting flaw in Cranelift-compiled call_ref and try_table catch paths. Malicious guests can reset consumed fuel after calls to run exponentially long on linear fuel, evading timeouts and periodic yields for denial of service.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Bytecodealliance
Products
Wasmtime
CVE-2026-109932

undici WebSocket client vulnerable to Denial of Service via unbounded automatic PONG buffering

undici is an HTTP client library for Node.js. In versions 5.15.0 through 6.29.0, 7.0.0 through 7.30.0, and 8.0.0 through 8.12.1, its WebSocket client, including the bundled WebSocket exposed by Node.js, can be driven to exhaust process memory by a malicious or compromised WebSocket server. For every PING frame received, the client automatically writes a PONG response and ignores the backpressure signal from the socket write, so a server that streams small PING frames while never reading the client's PONGs makes the outbound write queue and heap grow without bound until the Node.js process runs out of memory and terminates. The attack is remote and unauthenticated, needs only a normal WebSocket connection, and is asymmetric, since small inbound PINGs produce a much larger retained outbound queue, with availability the only impact. The issue is fixed in undici 6.29.1, 7.30.1, and 8.12.2, which pause WebSocket frame parsing when the automatic PONG response hits socket backpressure and resume on drain, bounding the outbound queue, and users should upgrade to one of those versions or later. There is no workaround.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Nodejs Undici
Products
Undici Undici
CVE-2026-100350

kin-openapi deepObject query decoding repeatedly compiles an invariant regular expression

kin-openapi is a Go project for handling OpenAPI files. From 0.145.0 until 0.146.0, openapi3filter repeatedly calls regexp.MustCompile for the same parameter-name regular expression inside the per-query-key loop in urlValuesDecoder.DecodeObject used to decode a deepObject query parameter. An unauthenticated remote client can send an affected endpoint a request containing many unrelated query keys, causing ValidateRequest to perform work and allocations proportional to the attacker-controlled key count for every deepObject parameter. The expression itself is fixed and this is not regular expression denial of service; the resource consumption comes from loop-invariant recompilation. This issue is fixed in version 0.146.0.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Getkin
Products
Kin-openapi
CVE-2026-77467

Lychee: A single 383-byte PDF causes ~184 seconds of CPU consumption in the real processing path

Lychee is a free, open-source photo-management tool. Prior to 7.7.0, Lychee enables ImageMagick PDF support with Ghostscript but does not apply an effective pre-render limit to PDF page dimensions in ImagickHandler::loadPdf(). An authenticated user who can upload a small PDF with an oversized /MediaBox can cause Imagick::readImage() to consume substantial CPU before failing to produce an image. When QUEUE_CONNECTION selects synchronous processing the request can occupy a web worker, while the official asynchronous Docker configuration can clog the shared image-processing queue and delay other work. The advisory did not identify a Ghostscript sandbox escape. This issue is fixed in version 7.7.0.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Lycheeorg
Products
Lychee
CVE-2026-101520

Unauthenticated HTTP Denial of Service in Oracle Global Lifecycle Management NextGen OUI Framework

Vulnerability in the Oracle Global Lifecycle Management NextGen OUI Framework product of Oracle Fusion Middleware (component: NextGen Installer). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 14.1.2.1.0 and 15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Global Lifecycle Management NextGen OUI Framework. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Global Lifecycle Management NextGen OUI Framework. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Oracle
Products
Global Lifecycle Management Nextgen Oui Framework
CVE-2026-91344

Unauthenticated HTTP Denial of Service in Oracle Outside In Technology

Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Clean Content SDK). The supported version that is affected is 8.5.8. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Outside In Technology. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Outside In Technology. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Oracle
Products
Outside In Technology
CVE-2026-91350

Unauthenticated HTTP Denial of Service in Oracle Outside In Technology

Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Clean Content SDK). The supported version that is affected is 8.5.8. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Outside In Technology. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Outside In Technology. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Oracle
Products
Outside In Technology
CVE-2026-91352

Unauthenticated HTTP Partial DoS via Oracle Outside In Technology SDK

Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Clean Content SDK). The supported version that is affected is 8.5.8. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Outside In Technology. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Outside In Technology. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Oracle
Products
Outside In Technology