CVE-2026-42208
BerriAI LiteLLM SQL Injection Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 11 May 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 4.0
- 9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 89.42% probability · 100th percentile
- CISA KEV
- Listed 8 May 2026 · due 11 May 2026
- Weakness
- CWE-89
- Affected
- litellm/litellm
- Source
- security-advisories@github.com
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://github.com/BerriAI/litellm/security/advisories/GHSA-r75f-5x8p-qvmc ; https://nvd.nist.gov/vuln/detail/CVE-2026-42208
References
- https://github.com/BerriAI/litellm/releases/tag/v1.83.7-stableProduct, Release Notes
- https://github.com/BerriAI/litellm/security/advisories/GHSA-r75f-5x8p-qvmcMitigation, Patch, Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-42208Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2463965Mitigation, Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42208.jsonThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-42208US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.