🛡️ CVE-2026-34371
🟡 CVSS 6.3 — Medium ⚠️ Exploit Public CWE-22 NVD
6.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

LibreChat is a ChatGPT clone with additional features. Prior to 0.8.4, LibreChat trusts the name field returned by the execute_code sandbox when persisting code-generated artifacts. On deployments using the default local file strategy, a malicious artifact filename containing traversal sequences (for example, ../../../../../app/client/dist/poc.txt) is concatenated into the server-side destination path and written with fs.writeFileSync() without sanitization. This gives any user who can trigger execute_code an arbitrary file write primitive as the LibreChat server user. This vulnerability is fixed in 0.8.4.

Details

Severity MEDIUM
CVSS Score 6.3
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N
CWE CWE-22
Public Exploit ⚠️ Yes
Source NVD
Published 2026-04-07
Updated 2026-06-02
Modified 2026-04-14
Fix URL N/A

Affected Packages

Software From version Fixed in
librechat 0.8.4

Similar Threats

Free Vulnerability Check

Is your WordPress site affected?

BotEraser helps you identify potentially vulnerable plugins and themes by checking your installation against known CVE records.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.