LiteLLM: Privilege Escalation to Proxy Admin via Cross-Domain Reuse of the Salt Key (BerriAI litellm)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.32 % · percentile 25 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Awaiting Analysis
Description
LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From 1.87.0 until 1.100.4, 1.101.3, 1.102.2, 1.103.1, and 1.104.0-rc.2, the proxy reuses one cryptographic context for at-rest secrets and session tokens, allowing an authenticated internal user to have crafted metadata containing a forged administrator credential encrypted and returned by the API-key flow. Replaying that ciphertext as a bearer token causes the proxy to trust the forged proxy administrator identity, permitting administrative access and arbitrary commands through the MCP stdio endpoint. Versions 1.87.0 through 1.90.x require EXPERIMENTAL_UI_LOGIN to be enabled, while versions after 1.91.0 are exploitable in the default configuration. This issue was fixed in LiteLLM 1.100.4, 1.101.3, 1.102.2, 1.103.1, and 1.104.0-rc.2.
Weaknesses (CWE)
- CWE-269 — Improper Privilege Management
- CWE-345 — Insufficient Verification of Data Authenticity
- CWE-441 — Unintended Proxy or Intermediary
References
- https://github.com/BerriAI/litellm/security/advisories/GHSA-7hp6-4w63-5g45
- https://github.com/BerriAI/litellm/commit/1d5fdc87fed66b49e1df8cf7d708ad93249eb7d0
- https://github.com/BerriAI/litellm/commit/9161d7f9d6073603ba61ee4aa5e2c0ef5b37a81b
- https://github.com/BerriAI/litellm/commit/9fa1a641119dd0d4fe43e93622eae5f482ceb63f
- https://github.com/BerriAI/litellm/commit/a80eacacee118fbed54e3d98f239d17a63fac818
- https://github.com/BerriAI/litellm/commit/f7cd90f09e9716652b38daec9f0640cdf49d582b
- https://github.com/BerriAI/litellm/releases/tag/v1.100.4
- https://github.com/BerriAI/litellm/releases/tag/v1.101.3
- https://github.com/BerriAI/litellm/releases/tag/v1.102.2
- https://github.com/BerriAI/litellm/releases/tag/v1.103.1
- https://github.com/BerriAI/litellm/releases/tag/v1.104.0-rc.2
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | GitHub_M |
| CVSS 3.1 | CRITICAL 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | NVD · security-advisories@github.com (Secondary) |
Advisories
- GHSA-7hp6-4w63-5g45 — LiteLLM: Privilege Escalation to Proxy Admin via Cross-Domain Reuse of the Salt Key
European references
- ENISA EUVD · EUVD-2026-108277
- GCVE · GCVE-0-2026-114612
Affected products
| Product | Versions |
|---|---|
| BerriAI · litellm | affected >= 1.87.0, < 1.100.4 ; affected >= 1.101.0, < 1.101.3 ; affected >= 1.102.0, < 1.102.2 ; affected >= 1.103.0, < 1.103.1 ; affected >= 1.104.0-rc.1, < 1.104.0-rc.2 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |