CVE Explorer
CVE-2026-31944
LibreChat is a ChatGPT clone with additional features. From 0.8.2 to 0.8.2-rc3, The MCP (Model Context Protocol) OAuth callback endpoint accepts the redirect from the identity provider and stores OAuth tokens for the user who initiated the flow, without verifying that the browser hitting the redirect URL is logged in or that the logged-in user matches the initiator. An attacker can send the authorization URL to a victim; when the victim completes the flow, the victim’s OAuth tokens are stored on
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"LibreChat","vendor":"danny-avila","versions":[{"status":"affected","version":">= v0.8.2, <= 0.8.2-rc3"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:a513ad3bb69d5e2870338b2ef0cd660df15f6af3013e5c9fc5b24670e99a21c7 · sha256:5ce5302f3a8e7192… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.6,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:a513ad3bb69d5e2870338b2ef0cd660df15f6af3013e5c9fc5b24670e99a21c7 · sha256:5ce5302f3a8e7192… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:a513ad3bb69d5e2870338b2ef0cd660df15f6af3013e5c9fc5b24670e99a21c7 · sha256:5ce5302f3a8e7192… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/danny-avila/LibreChat/security/advisories/GHSA-vf7j-7mrx-hp7g","tags":["x_refsource_CONFIRM"],"url":"https://github.com/danny-avila/LibreChat/security/advisories/GHSA-vf7j-7mrx-hp7g"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a513ad3bb69d5e2870338b2ef0cd660df15f6af3013e5c9fc5b24670e99a21c7 · sha256:5ce5302f3a8e7192… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.