CVE-2026-31950

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Source

https://cve.org/CVERecord?id=CVE-2026-31950

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31950.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-31950

Aliases

GHSA-f6rf-vm44-wh5g

Published

2026-03-27T19:25:25.007Z

Modified

2026-04-02T13:26:32.553422Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Summary

LibreChat's IDOR in SSE Stream Subscription Allows Reading Other Users' Chats

Details

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.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31950.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-284"
    ]
}

References

Affected packages

Git / github.com/danny-avila/librechat

Affected ranges

Type

GIT

Repo

https://github.com/danny-avila/librechat

Events

Introduced

24e8a258cd8fa1ff42c02cf15408079f1dbe07b0

Fixed

efbc088642afb69540efae9518b66e07760b23b7

Database specific

{
    "versions": [
        {
            "introduced": "0.8.2-rc2"
        },
        {
            "fixed": "0.8.2"
        }
    ]
}

Affected versions

chart-1.*

chart-1.9.5

chart-1.9.6

v0.*

v0.8.2-rc2

v0.8.2-rc3

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31950.json"