GHSA-855V-HQ7W-JMJW Open WebUI: Realtime endpoints accept Redis-revoked JWTs after signout/backchannel logout

Summary With Redis configured, Open WebUI supports JWT revocation: POST /api/v1/auths/signout per-token jti and OIDC back-channel logout per-user revokedat record revocations in Redis, and HTTP auth getcurrentuser rejects revoked tokens with 401. The realtime authentication surfaces do not perfor...

GHSA-GMFW-G93R-VG53 Open WebUI: Unauthenticated WebSocket Access to Collaborative Document Handlers (ydoc:awareness:update, ydoc:document:leave)

Summary The Socket.IO server is configured with alwaysconnect=True lines 78, 91 in backend/openwebui/socket/main.py and the connect handler line 329 never rejects unauthenticated connections. Two Ydoc event handlers have zero authentication checks, allowing unauthenticated clients to interact wit...

CVE-2026-65623 Quadratic CPU blow-up reassembling fragmented WebSocket messages in Bandit

Inefficient Algorithmic Complexity vulnerability in mtrudel bandit allows unauthenticated remote denial of service via CPU exhaustion during WebSocket fragment reassembly. The size guard 'Elixir.Bandit.WebSocket.Connection':oversizemessage?/2 called from handleframe/3 in...

EUVD-2026-48718

Inefficient Algorithmic Complexity vulnerability in mtrudel bandit allows unauthenticated remote denial of service via CPU exhaustion during WebSocket fragment reassembly. The size guard 'Elixir.Bandit.WebSocket.Connection':oversizemessage?/2 called from handleframe/3 in...

CVE-2026-65623 Quadratic CPU blow-up reassembling fragmented WebSocket messages in Bandit

Inefficient Algorithmic Complexity vulnerability in mtrudel bandit allows unauthenticated remote denial of service via CPU exhaustion during WebSocket fragment reassembly. The size guard 'Elixir.Bandit.WebSocket.Connection':oversizemessage?/2 called from handleframe/3 in...

CVE-2026-65623

CVE-2026-65623 describes a Quadratic CPU blow-up in Bandit’s WebSocket message reassembly. The vulnerability arises when handling fragmented WebSocket frames: each non-final continuation frame is appended to a left-nested iolist and the entire buffer is re-measured with IO.iodata_length/1 on ever...

EEF-CVE-2026-65623 Quadratic CPU blow-up reassembling fragmented WebSocket messages in Bandit

Summary Inefficient Algorithmic Complexity vulnerability in mtrudel bandit allows unauthenticated remote denial of service via CPU exhaustion during WebSocket fragment reassembly. The size guard 'Elixir.Bandit.WebSocket.Connection':oversize\message?/2 called from handle\frame/3 in...

CVE-2026-65623 Quadratic CPU blow-up reassembling fragmented WebSocket messages in Bandit

Inefficient Algorithmic Complexity vulnerability in mtrudel bandit allows unauthenticated remote denial of service via CPU exhaustion during WebSocket fragment reassembly. The size guard 'Elixir.Bandit.WebSocket.Connection':oversizemessage?/2 called from handleframe/3 in...

SUSE SLES15 Security Update : python-aiohttp (SUSE-SU-2026:3208-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3208-1 advisory. - CVE-2026-50269: improper validation of user-controlled strings allows for CRLF injection in multipart headers bsc1268398. -...

PT-2026-64373

Inefficient Algorithmic Complexity vulnerability in mtrudel bandit allows unauthenticated remote denial of service via CPU exhaustion during WebSocket fragment reassembly. The size guard 'Elixir.Bandit.WebSocket.Connection':oversize message?/2 called from handle frame/3 in...

Security update for python-aiohttp

This update for python-aiohttp fixes the following issues: CVE-2026-50269: improper validation of user-controlled strings allows for CRLF injection in multipart headers bsc1268398. CVE-2026-54273: no limit in the HTTP/1 pipelined request queue can lead to excessive resource consumption bsc1268543...

SUSE-SU-2026:3208-1 Security update for python-aiohttp

This update for python-aiohttp fixes the following issues: - CVE-2026-50269: improper validation of user-controlled strings allows for CRLF injection in multipart headers bsc1268398. - CVE-2026-54273: no limit in the HTTP/1 pipelined request queue can lead to excessive resource consumption...

Security update for python-aiohttp

This update for python-aiohttp fixes the following issues CVE-2026-22815: insufficient restrictions in header/trailer handling can cause uncapped memory usage and a denial of service bsc1261320. CVE-2026-34513: unbounded DNS cache can cause a excessive memory usage and lead to a denial of service...

SUSE-SU-2026:3207-1 Security update for python-aiohttp

This update for python-aiohttp fixes the following issues - CVE-2026-22815: insufficient restrictions in header/trailer handling can cause uncapped memory usage and a denial of service bsc1261320. - CVE-2026-34513: unbounded DNS cache can cause a excessive memory usage and lead to a denial of...

PYSEC-2026-3483 MCP Python SDK: WebSocket server transport does not support Host/Origin validation

Summary In affected versions, the deprecated WebSocket server transport mcp.server.websocket.websocketserver accepted the WebSocket handshake without applying any Host or Origin header validation. The TransportSecuritySettings mechanism that the SSE and Streamable HTTP transports use for this...

PYSEC-2026-3472 jupyter-server is vulnerable to CORS origin validation bypass when the `allow_origin_pat` configuration is used

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin validation when the alloworiginpat configuration is used. The issue arises from the use of re.match for validating the Origin header, which only anchors at the start of the string. This allow...

ROOT-APP-NPM-CVE-2026-54466 CVE-2026-54466 in @rootio/websocket-driver - Patched by Root

Root has patched CVE-2026-54466 in the @rootio/websocket-driver package for Root:npm. Multiple fixed versions available...

CVE-2026-16632

A flaw has been found in boazsegev facil.io up to 0.7.4. Affected is the function websocketonprotocolerror in the library lib/facil/http/parsers/websocketparser.h of the component WebSocket Frame Parser. This manipulation of the argument onmessage causes improper input validation. The attack can ...

CVE-2026-16632

A flaw has been found in boazsegev facil.io up to 0.7.4. Affected is the function websocketonprotocolerror in the library lib/facil/http/parsers/websocketparser.h of the component WebSocket Frame Parser. This manipulation of the argument onmessage causes improper input validation. The attack can ...

CVE-2026-16632 boazsegev facil.io WebSocket Frame websocket_parser.h websocket_on_protocol_error input validation

A flaw has been found in boazsegev facil.io up to 0.7.4. Affected is the function websocketonprotocolerror in the library lib/facil/http/parsers/websocketparser.h of the component WebSocket Frame Parser. This manipulation of the argument onmessage causes improper input validation. The attack can ...