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Back to active CVEs
Critical · CVSS 9.1CVE-2026-107685

WebSocket sessions do not verify TLS certificates, exposing API keys and OAuth tokens to on-path attackersCVE-2026-107685

Answer in brief

CVE-2026-107685 records a Critical severity (CVSS 9.1) vulnerability in WebSocket sessions do not verify TLS certificates, exposing API keys and OAuth tokens to on-path attackers. The current sources do not mark it as known exploited. The current feed maps agentjido/agentjido/req_llm (generic), agentjido/req_llm (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 23, 2026Updated Oct 23, 2026Source checked Oct 23, 2026First seen by HOL Oct 23, 2026Material review Oct 23, 2026
Upstream Advisory

Record context

Vulnerability class
Secret Exfiltration
EPSS
Not reported
CWE IDs
CWE-295
Source
CVE List V5
Source checked
Oct 23, 2026
References
5 linked sources
Open source record

Key facts

Risk
Critical · CVSS 9.1
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps agentjido/agentjido/req_llm (generic), agentjido/req_llm (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
agentjido/agentjido/req_llmgeneric>=a389d718640ceb2d541a8f540ab954cbf5ef8313 <c7264fc0217fbacfb5562234ff790b8e4462de76c7264fc0217fbacfb5562234ff790b8e4462de76
agentjido/req_llmgeneric>=1.9.0 <1.29.01.29.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for agentjido/agentjido/req_llm, agentjido/req_llm.
  2. 2Review the reported fix. Source-reported workaround: Leave the openai_stream_transport provider option at its default :sse for the OpenAI and OpenAI Codex providers, and do not call ReqLLM.Providers.OpenAI.WebSocket.start_responses_session/2 directly. Responses streaming then runs over HTTP through Finch, which verifies certificates. ReqLLM.OpenAI.Realtime.connect/2 has no HTTP alternative, so do not use it on an affected version.

Evidence timeline and material changes

  1. Published upstream

    Oct 23, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 23, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 23, 2026

Sources and claim methodology

  • Source referencecna.erlef.org
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referenceosv.dev
Upstream source description

Improper Certificate Validation vulnerability in the WebSocket streaming client in agentjido req_llm allows an on-path attacker to read and modify OpenAI WebSocket sessions, including the authorization bearer token, via a TLS certificate the client does not trust. ReqLLM.Streaming.WebSocketSession.Client.start/3 in lib/req_llm/streaming/web_socket_session/client.ex starts WebSockex without TLS options, and WebSockex defaults to insecure: true, which connects with verify: :verify_none. The option allowlist also drops any caller-supplied cacerts or ssl_options, so an application cannot turn verification on. The OpenAI Responses, Realtime, and Codex WebSocket paths reach this client and send the API key or OAuth access token in the authorization header. HTTP streaming through Finch and the HTTP/2 duplex session through Mint verify certificates and are not affected. This issue affects req_llm: from 1.9.0 before 1.29.0.

Quoted source text, attributed separately from HOL analysis.