CRITICAL CISA KEV

CVE-2026-42208

CVSS v3

9.8

CRITICAL

EPSS Score

5.8 %

exploit probability, as of 2026-10-19

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

litellmPyPIfrom 1.81.16 · fixed in 1.83.7

Vendor advisories

CVE-2026-42208 Red Hat Product Security
LiteLLM: LiteLLM: Unauthorized data access and modification via SQL injection

Full record on NVD

Description

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.81.16 to before version 1.83.7, a database query used during proxy API key checks mixed the caller-supplied key value into the query text instead of passing it as a separate parameter. An unauthenticated attacker could send a specially crafted Authorization header to any LLM API route (for example POST /chat/completions) and reach this query through the proxy's error-handling path. An attacker could read data from the proxy's database and may be able to modify it, leading to unauthorised access to the proxy and the credentials it manages. This issue has been patched in version 1.83.7.

CISA Known Exploited Vulnerability

Date Added: 2026-05-08
Patch Due Date: 2026-05-11
Ransomware Use: Unknown

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2026-05-08

Frequently asked questions

What is CVE-2026-42208?

Is CVE-2026-42208 actively exploited?

Yes. CVE-2026-42208 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-05-11.

What is the CVSS score for CVE-2026-42208?

CVE-2026-42208 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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