TI-2025-08100 Aliases CVE-2025-8849 GHSA-2q3x-64cr-5mp5

Denial of Service in danny-avila/librechat

HIGH 66CWE-400Published 2025-10-30 · Updated 2025-10-31

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.

Summary

LibreChat version 0.7.9 is vulnerable to a Denial of Service (DoS) attack due to unbounded parameter values in the `/api/memories` endpoint. The `key` and `value` parameters accept arbitrarily large inputs without proper validation, leading to a null pointer error in the Rust-based backend when excessively large values are submitted. This results in the inability to create new memories, impacting the stability of the service.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00347 28th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed danny-avila/librechat (danny-avila): v0.8.0-rc2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
danny-avila	danny-avila/librechat	before v0.8.0-rc2	v0.8.0-rc2	Patch available	CNA

danny-avila/librechat Vendordanny-avila Affected before v0.8.0-rc2 Fixed in v0.8.0-rc2 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:librechat:librechat:0.7.9:-::::::	0.7.9	Vulnerable	danny-avila

cpe:2.3:a:librechat:librechat:0.7.9:-:*:*:*:*:*:* Versions 0.7.9 Vulnerable ·danny-avila

Remediation

Fix · CNA danny-avila/librechat (danny-avila) Fixed in v0.8.0-rc2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2025-10-30
danny-avila/librechat v0.8.0-rc2
2 records Highest priority Priority HIGH 1 HIGH, 1 LOW
Other records, highest priority first
- TI-2025-08101 Insecure API Design in danny-avila/librechatPriority LOW 38
Show all 2 records →

Timeline

2026-10-02 Threatist record created from CVE-2025-8849
2026-10-03 Alias added: GHSA-2q3x-64cr-5mp5

References

Exploit 1

https://huntr.com/bounties/e9d9404c-cd19-4226-a580-9cba14b7d7d6

Patch 1

https://github.com/danny-avila/librechat/commit/edf33bedcbb08c33e59df76f06454ed7efd896f9

TI-2026-25134 LibreChat Exfiltrates Server Secrets via MCP Server URL Injection CVSS 3.1CRITICAL 9.6
TI-2026-17862 LibreChat MCP Stdio Remote Command Execution CVSS 3.1CRITICAL 9.9
TI-2026-38976 LibreChat: Missing Resource Parameter Validation in MCP OAuth Flow CVSS 3.1CRITICAL 9.3
TI-2024-27763 LibreChat through 0.7.4-rc1 has incorrect access control for message updates. CVSS 3.1CRITICAL 9.8
TI-2024-10347 Path Traversal in danny-avila/librechat CVSS 3.0HIGH 8.8
TI-2026-25682 In LibreChat 0.8.1-rc2, a logged-in user obtains a JWT for both the LibreChat API and the RAG API. CVSS 3.1CRITICAL 9.0

See all 50 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences