What is CVE-2026-35029?

CVE-2026-35029 is a high-severity vulnerability in Berriai Litellm, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-04-06.

How severe is CVE-2026-35029?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2026-35029 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Berriai Litellm

CVE-2026-35029

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.83.0, the /config/update endpoint does not enforce admin role authorization. A user who is already authenticated into the platform can then us…

Vulnerability class: Broken Access Control

EPSS: 0.194 (95.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Berriai Litellm — versions < 1.83.0
Litellm

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

Public proof-of-concept exploits

learner202649/CVE-2026-35029-PoC

References

https://github.com/BerriAI/litellm/security/advisories/GHSA-53mr-6c8q-9789 (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-35029?: CVE-2026-35029 is a high-severity vulnerability in Berriai Litellm, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-04-06.
How severe is CVE-2026-35029?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2026-35029 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.