| Component | LiteLLM |
| Severity | high (CVSS 8.8) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Published (NVD) | 2026-05-08 |
| Last modified | 2026-07-15 |
| Affected versions | litellm >= 1.74.2, < 1.83.7 openshift_ai >= 2.25, < 2.25.8 openshift_ai >= 3.3, < 3.3.4 openshift_ai = 3.4 |
| Fixed in | 1.83.7, 2.25.8, 3.3.4 |
| Weakness | CWE-77CWE-78 |
| CISA KEV | listed 2026-06-08 |
NVD description
LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.74.2 to before version 1.83.7, two endpoints used to preview an MCP server before saving it — POST /mcp-rest/test/connection and POST /mcp-rest/test/tools/list — accepted a full server configuration in the request body, including the command, args, and env fields used by the stdio transport. When called with a stdio configuration, the endpoints attempted to connect, which spawned the supplied command as a subprocess on the proxy host with the privileges of the proxy process. The endpoints were gated only by a valid proxy API key, with no role check. Any authenticated user — including holders of low-privilege internal-user keys — could therefore run arbitrary commands on the host. This issue has been patched in version 1.83.7.
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
What to do
- Upgrade LiteLLM to
1.83.7or later (or the patched release of your branch: 2.25.8, 3.3.4). - Do not expose the component's API or UI to the internet without authentication in front of it.
- It is exploited in the wild: treat unpatched hosts as compromised, rotate the secrets they hold and review their logs.
Sources
- NVD: CVE-2026-42271
- https://github.com/BerriAI/litellm/security/advisories/GHSA-v4p8-mg3p-g94g
- https://github.com/BerriAI/litellm/releases/tag/v1.83.7-stable
- https://access.redhat.com/errata/RHSA-2026:27784
- https://access.redhat.com/errata/RHSA-2026:28960
- https://access.redhat.com/errata/RHSA-2026:30056
- https://access.redhat.com/security/cve/CVE-2026-42271
- https://bugzilla.redhat.com/show_bug.cgi?id=2467924
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42271.json
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-42271
Read more
Other LiteLLM CVEs
A flaw has been found in BerriAI LiteLLM up to 1.95.0. Affected by this issue is the function ui_view_session_spend_logs of the file litellm...
A vulnerability has been found in BerriAI LiteLLM up to 1.94.0. This affects the function get_secret of the file secret_managers/main.py of...
LiteLLM contains a weak authentication vulnerability that allows an attacker holding a valid JWT from the configured identity provider to au...
BerriAI LiteLLM before 1.101.0-rc.1 contains a tenant isolation bypass vulnerability in the semantic cache layer that allows authenticated u...
LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.83.9, an authenticated LiteLLM Proxy caller...
LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to versions 1.88.6 and 1.96.2, any authenticated...