CVE-2026-88002 Open WebUI: Any authenticated user can hang the server via a cyclic chat message history

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.5.0 until 0.11.1, the message-chain reconstruction helper in backend/openwebui/utils/misc.py advanced through a chat history by map key but tracked visited entries using each message body's optional id...

CVE-2026-87011

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, the unauthenticated POST /oauth/backchannel-logout handler in backend/openwebui/utils/oauth.py fetched the OIDC discovery document and signing keys before validating a submitted logout...

CVE-2026-87011 Open WebUI: Unauthenticated requests can stall the server via uncached OIDC fetches in back-channel logout

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, the unauthenticated POST /oauth/backchannel-logout handler in backend/openwebui/utils/oauth.py fetched the OIDC discovery document and signing keys before validating a submitted logout...

CVE-2026-87011 Open WebUI: Unauthenticated requests can stall the server via uncached OIDC fetches in back-channel logout

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, the unauthenticated POST /oauth/backchannel-logout handler in backend/openwebui/utils/oauth.py fetched the OIDC discovery document and signing keys before validating a submitted logout...

CVE-2026-87011 Open WebUI: Unauthenticated requests can stall the server via uncached OIDC fetches in back-channel logout

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, the unauthenticated POST /oauth/backchannel-logout handler in backend/openwebui/utils/oauth.py fetched the OIDC discovery document and signing keys before validating a submitted logout...

CVE-2026-87011

Open WebUI , a self-hosted AI platform, contains a denial-of-service vulnerability in the unauthenticated POST /oauth/backchannel-logout handler (backend/open_webui/utils/oauth.py). From version 0.9.0 through 0.11.1 , the handler fetched the OIDC discovery document and signing keys before validat...

CVE-2026-87011: Asymmetric Resource Consumption (Amplification)

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, the unauthenticated POST /oauth/backchannel-logout handler in backend/openwebui/utils/oauth.py fetched the OIDC discovery document and signing keys before validating a submitted logout...

EUVD-2026-67932

multer vulnerable to Denial of Service via oversized array index in field names...

EUVD-2026-69231

xmldom: Quadratic-time attribute deduplication...

HTTPX2: Quadratic SSE line buffering can cause CPU denial of service

Summary HTTPX2's Server-Sent Events SSE parser repeatedly copied and rescanned buffered text when a server split one unterminated line across many response chunks. The total work grows quadratically with the length of the line. An attacker-controlled or compromised SSE endpoint can exploit this...

xmldom PI grammar regex ReDoS: quadratic backtracking on unterminated processing instructions

Summary @xmldom/xmldom's processing-instruction PI grammar regex exhibits quadratic-time backtracking ReDoS when parsing an unterminated processing instruction. A single small XML document containing forces the regular expression engine into On² work, stalling the Node.js event loop. The input is...

EUVD-2026-63092

Netty: Fragmented ClientHello records trigger quadratic pre-handshake reassembly in default SNI parsing...

Security Bulletin: Platform Navigator and Automation Assets in IBM Cloud Pak for Integration are vulnerable to a vulnerability in brace-expansion

Summary Platform Navigator and Automation Assets in IBM Cloud Pak for Integration are vulnerable to a vulnerability in brace-expansion. CVE-2026-69152 The vulnerability has been addressed. Vulnerability Details CVEID:CVE-2026-69152 DESCRIPTION: The brace-expansion library generates arbitrary...

Security update for python-tornado6

This update for python-tornado6 fixes the following issue CVE-2026-82397: an unauthenticated request body containing millions of separator-delimited fields can synchronously stall the single-threaded event loop and delay every connection bsc1277725. Patch Instructions: To install this SUSE update...

SUSE-SU-2026:4076-1 Security update for python-tornado6

This update for python-tornado6 fixes the following issue - CVE-2026-82397: an unauthenticated request body containing millions of separator-delimited fields can synchronously stall the single-threaded event loop and delay every connection bsc1277725...

Security update for python-tornado

This update for python-tornado fixes the following issue: CVE-2026-82397: an unauthenticated request body containing millions of separator-delimited fields can synchronously stall the single-threaded event loop and delay every connection bsc1277725. Patch Instructions: To install this SUSE update...

SUSE-SU-2026:4073-1 Security update for python-tornado

This update for python-tornado fixes the following issue: - CVE-2026-82397: an unauthenticated request body containing millions of separator-delimited fields can synchronously stall the single-threaded event loop and delay every connection bsc1277725...

brace-expansion: DoS via unbounded intermediate arrays, bypassing the CVE-2026-14257 mitigation

A flaw was found in the brace-expansion library. The expand function does not apply maxLength when constructing comma-alternative intermediate arrays or padded sequences, allowing attacker-controlled input to exhaust memory or block the event loop, resulting in a denial of service. This issue is...

SUSE-SU-2026:23523-1 Security update for python-tornado6

This update for python-tornado6 fixes the following issue: - CVE-2026-82397: an unauthenticated request body containing millions of separator-delimited fields can synchronously stall the single-threaded event loop and delay every connection bsc1277725...

CVE-2026-71429

A flaw was found in stream-json. This vulnerability allows a remote attacker to cause a Denial of Service DoS by providing a specially crafted, deeply nested JSON document. The library's path filters, such as pick and ignore, inefficiently process these structures, leading to excessive resource...