CVE-2026-84377: LiteLLM Authenticated SSRF and Credential Exfiltration

# CVE-2026-84377: LiteLLM Authenticated SSRF and Credential Exfiltration

https://gcdradar.vercel.app/incidents/cve-2026-84377-litellm-authenticated-ssrf-and-credential-exf · AIR-2026-0218 · closed 2026-09-02

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-09-02 (happened 2026-09-30)
- AI role: Attack on AI
- Products: LiteLLM
- CVE ids: CVE-2026-84377
- CVSS: 6.5

## Summary

LiteLLM allowed authenticated users to redirect outbound provider calls and exfiltrate stored upstream API credentials due to incomplete request body validation. A patch was issued to address the security advisory.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-09-30: CVE-2026-84377: LiteLLM: Authenticated SSRF and provider-credential exfiltration via unvalidated request-body routing parameters (https://github.com/advisories/GHSA-3cv6-jpf6-8222)
- 2026-09-02: CVE-2026-84377: LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. (https://nvd.nist.gov/vuln/detail/CVE-2026-84377)

## Sources

- 2026-09-02 NVD: CVE-2026-84377: LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. https://nvd.nist.gov/vuln/detail/CVE-2026-84377
- 2026-09-30 GitHub Advisory Database: CVE-2026-84377: LiteLLM: Authenticated SSRF and provider-credential exfiltration via unvalidated request-body routing parameters https://github.com/advisories/GHSA-3cv6-jpf6-8222

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.