CVEs / CVE-2026-35029
CVE-2026-35029: BerriAI litellm vulnerability
- high 8.8 CVSS 3.1 (NVD)
- EPSS 38.6% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
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Description
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 use this endpoint to modify proxy configuration and environment variables, register custom pass-through endpoint handlers pointing to attacker-controlled Python code, achieving remote code execution, read arbitrary server files by setting UI_LOGO_PATH and fetching via /get_image, and take over other privileged accounts by overwriting UI_USERNAME and UI_PASSWORD environment variables. Fixed in v1.83.0.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| BerriAI litellm | < 1.83.0 | — |
| Product | Affected | Fixed in |
|---|---|---|
| litellm (PyPI) | before 1.83.0 | 1.83.0 |
Package versions from GHSA-53mr-6c8q-9789.
Exploitation
Not in the CISA Known Exploited Vulnerabilities catalog as of 30 Oct 2026.
Severity
| CVSS 3.1 | 8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-863, CWE-425 |
References
- CVE-2026-35029 on NVD
- CVE-2026-35029 on OSV
- https://github.com/BerriAI/litellm/security/advisories/GHSA-53mr-6c8q-9789 Mitigation, Vendor Advisory
- http://seclists.org/fulldisclosure/2026/Apr/17
- https://access.redhat.com/errata/RHSA-2026:13545
- https://access.redhat.com/errata/RHSA-2026:28960
- https://access.redhat.com/errata/RHSA-2026:30056
- https://access.redhat.com/security/cve/CVE-2026-35029
- https://bugzilla.redhat.com/show_bug.cgi?id=2455474
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35029.json
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.