CVE-2026-31945
- Source
- https://cve.org/CVERecord?id=CVE-2026-31945
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31945.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-31945
- Aliases
-
- GHSA-f92m-jpv7-55p2
- Published
- 2026-03-27T19:23:53.395Z
- Modified
- 2026-07-15T01:49:08.009666724Z
- Severity
-
- 7.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
- Summary
- LibreChat Server-Side Request Forgery using DNS resolution
- Details
-
LibreChat is a ChatGPT clone with additional features. Versions 0.8.2-rc2 through 0.8.2 are vulnerable to a server-side request forgery (SSRF) attack when using agent actions or MCP. Although a previous SSRF vulnerability (https://github.com/danny-avila/LibreChat/security/advisories/GHSA-rgjq-4q58-m3q8) was reported and patched, the fix only introduced hostname validation. It does not verify whether DNS resolution results in a private IP address. As a result, an attacker can still bypass the protection and gain access to internal resources, such as an internal RAG API or cloud instance metadata endpoints. Version 0.8.3-rc1 contains a patch.
- Database specific
{ "cwe_ids": [ "CWE-918" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31945.json", "cna_assigner": "GitHub_M" }- References
Affected packages
Git / github.com/danny-avila/librechat
Affected ranges
- Type
- GIT
- Repo
- https://github.com/danny-avila/librechat
- Events
- Database specific
{ "cpe": [ "cpe:2.3:a:librechat:librechat:0.8.2:-:*:*:*:*:*:*", "cpe:2.3:a:librechat:librechat:0.8.2:rc2:*:*:*:*:*:*", "cpe:2.3:a:librechat:librechat:0.8.2:rc3:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "0.8.2-rc2" }, { "fixed": "0.8.3-rc1" }, { "introduced": "0.8.2-NA" }, { "last_affected": "0.8.2-NA" }, { "last_affected": "0.8.2-rc2" }, { "introduced": "0.8.2-rc3" }, { "last_affected": "0.8.2-rc3" } ], "source": [ "AFFECTED_FIELD", "CPE_STRING" ] }