Vulnerability · Published Oct 30, 2025 · Assigned by @huntr_ai

CVE-2025-8849Denial of Service in danny-avila/librechat

Medium 5.4

In plain English

A medium-severity uncontrolled resource consumption in danny-avila/librechat from danny-avila. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).

Severity (CVSS 3.0)5.4Medium

Exploit odds (30 days)0.3%top 71.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
danny-avila	danny-avila/librechat	unspecified – before v0.8.0-rc2

Weakness: CWE-400 · Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

In plain English

Official description

Affected products (as reported)

References