CVE-2026-42203: fallo de gravedad alta en BerriAI litellm
LiteLLM: Server-Side Template Injection in /prompts/test endpoint
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
41Vexday Risk Score
Sin señal de explotación. Ella tiene prueba de concepto pública.
ssvc Attendcvss 8.6epss 0.4%
de la publicación al arma7 días
Publicada en NVD8 may
1ª PoC+7d
LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.80.5 to before version 1.83.7, the POST /prompts/test endpoint accepted user-supplied prompt templates and rendered them without sandboxing. A crafted template could run arbitrary code inside the LiteLLM Proxy process. The endpoint only checks that the caller presents a valid proxy API key, so any authenticated user could reach it. Depending on how the proxy is deployed, this could expose secrets in the process environment (such as provider API keys or database credentials) and allow commands to be run on the host. This issue has been patched in version 1.83.7.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Productos afectados
BerriAI · litellmPoCs públicas encontradas — 1
githubgithub.com/Astianjy/CVE-2026-42203★ 0⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.
CVEs relacionadas — BerriAI litellm
En el mismo producto, de las más peligrosas a las menos.
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Referencias
https://access.redhat.com/security/cve/CVE-2026-42203https://bugzilla.redhat.com/show_bug.cgi?id=2467917https://github.com/BerriAI/litellm/releases/tag/v1.83.7-stablehttps://github.com/BerriAI/litellm/security/advisories/GHSA-xqmj-j6mv-4862https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42203.json