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  4. CVE 2026 111704 langchat through commit 2a6285a missing
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Back to active CVEs
Critical · CVSS 9.3CVE-2026-111704

LangChat through commit 2a6285a Missing Authentication on REST API ControllersCVE-2026-111704

Answer in brief

CVE-2026-111704 records a Critical severity (CVSS 9.3) vulnerability in LangChat through commit 2a6285a Missing Authentication on REST API Controllers. The current sources do not mark it as known exploited. The current feed maps LangChat/langchat (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 16, 2026Updated Oct 16, 2026Source checked Oct 16, 2026First seen by HOL Oct 16, 2026Material review Oct 16, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 9.3. 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 LangChat/langchat (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
LangChat/langchatgeneric>=0 <=2a6285a6b8c51d51cdc599771bb667a30bc03f5cNot reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for LangChat/langchat.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Oct 16, 2026

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

  2. Source modified

    Oct 16, 2026

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

  3. First seen by HOL

    Oct 16, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencehackmd.io
  • Source referencevulncheck.com
Upstream source description

LangChat through commit 2a6285a contains a missing authentication vulnerability that allows unauthenticated remote attackers to access REST controllers because no Sa-Token interceptor is registered. Attackers can query /api/v1/auth/users to read plaintext passwords, retrieve LLM provider API keys, create super-admin accounts, and modify or delete data.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • qKnow through 2.4.3 Missing Authentication via /flyflow Workflow EndpointsAlso CWE-306
  • Niefy wx-api through 0.8.2 Authentication Bypass via Unverified openid CookieAlso CWE-306
  • OtterMind Nubase through 0.1.4 Missing Authentication in Storage Object APIAlso CWE-306
  • 99AI through 4.3.0 Unauthenticated Information Disclosure via chatLog exportExcelAlso CWE-306
  • Roncoo-pay through commit 9428382 Information Disclosure via /f2fPay/order/queryAlso CWE-306
  • IBM i is Affected By An Improper Privilege Management VulnerabilitySame generic ecosystem

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-306
Source
CVE List V5
Source checked
Oct 16, 2026
References
5 linked sources
Open source record