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BREW-AIDER-CVE-2026-35029 (GHSA-53MR-6C8Q-9789)

Vulnerability from osv_homebrew – Published: 2026-08-13 16:35 – Updated: 2026-09-09 23:40 – Source website
VLAI
Summary
LiteLLM: Privilege escalation via unrestricted proxy configuration endpoint
Details

Impact

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 do the following:

  • 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
  • Take over other priveleged accounts by overwriting UI_USERNAME and UI_PASSWORD environment variables

Patches

Fixed in v1.83.0. The endpoint now requires proxy_admin role.

Workarounds

Restrict API key distribution. There is no configuration-level workaround.

Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": null,
        "range_state": "affected",
        "resource": "litellm",
        "resource_purl": "pkg:pypi/litellm@1.81.10",
        "upstream_fixed_in": "1.83.0"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "aider",
        "purl": "pkg:brew/aider"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "registry",
    "upstream_evidence": [
      {
        "ecosystem": "PyPI",
        "key": "pkg:pypi/litellm@1.81.10",
        "name": "litellm",
        "resource": "litellm",
        "strategy": "registry",
        "subject_version": "1.81.10"
      }
    ]
  },
  "details": "### Impact\n\nThe `/config/update endpoint` does not enforce admin role authorization. A user who is already authenticated into the platform can then use this endpoint to do the following:\n\n  - Modify proxy configuration and environment variables\n  - Register custom pass-through endpoint handlers pointing to attacker-controlled Python code, achieving remote code execution\n  - Read arbitrary server files by setting UI_LOGO_PATH and fetching via /get_image\n  - Take over other priveleged accounts by overwriting UI_USERNAME and UI_PASSWORD environment variables\n\n### Patches\n\nFixed in v1.83.0. The endpoint now requires `proxy_admin` role.\n\n### Workarounds\n\nRestrict API key distribution. There is no configuration-level workaround.",
  "id": "BREW-aider-CVE-2026-35029",
  "modified": "2026-09-09T23:40:56Z",
  "published": "2026-08-13T16:35:12Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/BerriAI/litellm/security/advisories/GHSA-53mr-6c8q-9789"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35029"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/BerriAI/litellm"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2026/Apr/17"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "LiteLLM: Privilege escalation via unrestricted proxy configuration endpoint",
  "upstream": [
    "GHSA-53mr-6c8q-9789",
    "CVE-2026-35029",
    "PYSEC-2026-2597"
  ]
}



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