CVE-2025-6088 json
Improper Authorization in danny-avila/librechat
published last yr. modified 4mo ago also EUVD-2025-27623
- cvss
- 4.2
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
In version 0.7.8 of danny-avila/librechat, improper authorization controls in the conversation sharing feature allow unauthorized access to other users' conversations if the conversation ID is known. Although UUIDv4 conversation IDs are generated server-side and are difficult to brute force, they can be obtained from less-protected sources such as server-side access logs, browser history, or screenshots. The vulnerability permits a logged-in user to gain read-only access to another user's conversations by exploiting the `/api/share/conversationID` endpoint, which lacks authorization checks. This issue is resolved in version v0.7.9-rc1.
Patch / fix
- danny-avila danny-avila/librechat v0.7.9-rc1
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- huntr.com https://huntr.com/bounties/361405bb-a739-41eb-a680-4cb6193e7c76 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 4.2 | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L |
| NVD | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected products
- danny-avila danny-avila/librechat
Classification
- Weakness
-
- CWE-285 Improper Authorization
References
-
github.com
/danny-avila/librechat/commit/3af2666890bbf291cb7b9f3e03592d54714f0ff5
patch
-
huntr.com
/bounties/361405bb-a739-41eb-a680-4cb6193e7c76
exploit, patch, third-party-advisory
Sources
- CVE List CVE-2025-6088
- NVD CVE-2025-6088
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.