CVE Explorer
CVE-2026-31950
LibreChat is a ChatGPT clone with additional features. In versions 0.8.2-rc2 through 0.8.2-rc3, the SSE streaming endpoint `/api/agents/chat/stream/:streamId` does not verify that the requesting user owns the stream. Any authenticated user who obtains or guesses a valid stream ID can subscribe and read another user's real-time chat content, including messages, AI responses, and tool invocations. Version 0.8.2 patches the issue.
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":">= 0.8.2-rc2, < 0.8.2"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:48778ef7aee7799cb0104ac68c2a20a57fe669da14ea86f076e2f88a91fbef93 · sha256:6aa3891ae8dd3bef… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:48778ef7aee7799cb0104ac68c2a20a57fe669da14ea86f076e2f88a91fbef93 · sha256:6aa3891ae8dd3bef… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:48778ef7aee7799cb0104ac68c2a20a57fe669da14ea86f076e2f88a91fbef93 · sha256:6aa3891ae8dd3bef… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/danny-avila/LibreChat/security/advisories/GHSA-f6rf-vm44-wh5g","tags":["x_refsource_CONFIRM"],"url":"https://github.com/danny-avila/LibreChat/security/advisories/GHSA-f6rf-vm44-wh5g"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:48778ef7aee7799cb0104ac68c2a20a57fe669da14ea86f076e2f88a91fbef93 · sha256:6aa3891ae8dd3bef… · /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.