Dashboard / CVE-2026-31950

CVE-2026-31950

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 51/100
Published: 2026-03-27 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: None
S: Unchanged
C: High
I: None
A: None

Description

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.

Weakness Classification (2)

Affected Software (2)

VendorProductVersion
librechat librechat 0.8.2
librechat librechat 0.8.2

References & Advisories (1)

Bug Bounty Relevance

51 / 100
✓ Network accessible
✓ No user interaction

CVSS Score

5.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.22%
Raw Score 0.002170
Percentile 12.1%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00217
2026-10-28
0.00217

Intelligence Sources

nvd ref →

External Links