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PatchSiren cyber security CVE debrief

CVE-2025-69220 danny-avila CVE debrief

CVE-2025-69220 is a high-severity vulnerability in LibreChat, a ChatGPT clone with additional features. An authenticated attacker can change the behavior of arbitrary agents by uploading new files to the file context or file search, even without permissions for that agent. This issue is fixed in version 0.8.2-rc2. The vulnerability allows for unauthorized changes to agent behavior, potentially impacting the security and integrity of affected deployments. Defenders should assess exposure and prioritize upgrading to version 0.8.2-rc2.

Vendor
danny-avila
Product
LibreChat
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-01-07
Original CVE updated
2026-09-30
Advisory published
2026-01-07
Advisory updated
2026-09-30

Who should care

Defenders responsible for LibreChat deployments should assess exposure and prioritize upgrading to version 0.8.2-rc2. Security teams and administrators should conduct inventory checks and monitor for unauthorized file uploads.

Why it matters

CVE-2025-69220 is a high-severity vulnerability in LibreChat that allows authenticated attackers to change agent behavior via file uploads. Defenders should prioritize verifying exposure, upgrading to version 0.8.2-rc2, and monitoring for unauthorized changes.

  • Verify exposure of LibreChat agents to unauthorized file uploads
  • Upgrade to version 0.8.2-rc2 to fix the vulnerability
  • Conduct inventory checks for affected versions
  • Monitor for unauthorized file uploads and changes to agent behavior

Technical summary

The vulnerability allows an authenticated attacker to change the behavior of arbitrary agents in LibreChat by uploading new files to the file context or file search. This is due to improper access control for file uploads. The issue is fixed in version 0.8.2-rc2. The vulnerability has a CVSS score of 7.1 and is considered high-severity. Affected versions include LibreChat 0.8.1-rc2. Defenders should prioritize verifying exposure and upgrading to version 0.8.2-rc2 to mitigate the vulnerability. Inventory checks and monitoring for unauthorized file uploads are recommended.

Defensive priority

Defenders should prioritize verifying exposure of LibreChat agents and upgrading to version 0.8.2-rc2. Inventory checks and monitoring for unauthorized file uploads are recommended.

Recommended defensive actions

  • Verify exposure of LibreChat agents and upgrade to version 0.8.2-rc2
  • Conduct inventory checks for affected versions and monitor for unauthorized file uploads
  • Implement compensating controls to restrict agent behavior changes
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score of 7.1 and affected versions. The issue is fixed in version 0.8.2-rc2. Evidence is limited to publicly available information from the CVE Program and NVD. Defenders should verify exposure by checking for affected versions and monitor for unauthorized file uploads. The CVE record was published on 2026-01-07T21:15:59.547Z and has not been modified since then.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-69220 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-69220

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-69220 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-69220

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://cwe.mitre.org/data/definitions/284.html

    [email protected] - Not Applicable

  • Source reference

    Unverified legacy reference

    URL: https://cwe.mitre.org/data/definitions/862.html

    [email protected] - Not Applicable

  • Source reference

    Unverified legacy reference

    URL: https://github.com/danny-avila/LibreChat/commit/4b9c6ab1cb9de626736de700c7981f38be08d237

    [email protected] - Patch

  • Source reference

    Unverified legacy reference

    URL: https://github.com/danny-avila/LibreChat/releases/tag/v0.8.2-rc2

    [email protected] - Release Notes

  • Source reference

    Unverified legacy reference

    URL: https://github.com/danny-avila/LibreChat/security/advisories/GHSA-xcmf-rpmh-hg59

    [email protected] - Exploit, Vendor Advisory

  • Source reference

    Unverified legacy reference

    URL: https://owasp.org/Top10/A01_2021-Broken_Access_Control

    [email protected] - Not Applicable

  • Source reference

    Unverified legacy reference

    URL: https://owasp.org/www-project-web-security-testing-guide/v42/4-Web_Application_Security_Testing/05-Authorization_Testing/02-Testing_for_Bypassing_Authorization_Schema.html

    [email protected] - Technical Description

  • Source reference

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/OWASP/ASVS/v5.0.0/5.0/OWASP_Application_Security_Verification_Standard_5.0.0_en.pdf

    [email protected] - Technical Description

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.