What it is
CVE-2026-42208 is an unauthenticated LiteLLM: SQL injection in Proxy API key verification. LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.81.16 to before version...
Vulnerability report
LiteLLM: SQL injection in Proxy API key verification
BerriAI / litellm · All versions (default: unaffected)
Decision summary
Direct answers before the deeper technical record.
What it is
CVE-2026-42208 is an unauthenticated LiteLLM: SQL injection in Proxy API key verification. LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.81.16 to before version...
Is it exploited?
Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.
Who is affected?
BerriAI / litellm all versions (default: unaffected).
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
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.
Exploitation evidence
Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.
CVE
Independent exploitation attestation added to the KEV Intelligence record.
Nuclei Templates
Public scanner or PoC coverage increases practical exploitability.
Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CVE First | 2026-06-01 13:26 UTC |
| CISA | 2026-06-02 14:01 UTC |
Detection
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Raw values available in Pro and Enterprise.
Nuclei template detected 01 Jun 2026.
View Nuclei template (opens in new tab)No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →Scanner and exploit-framework references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-42208.yaml | 01 Jun 2026 |
Risk and context
CVSS v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
89.4%
Recent mention · Github Advisory Database (PIP)
Impact semantic-router versions 0.1.8 through 0.1.14 declare litellm>=1.61.3 with no upper bound. During the window in which litellm==1.82.8 was the latest release on PyPI, a fresh install of any affected semantic-router version could resolve to that compromised wheel. The...
Read full advisoryCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Recent mention · Github Advisory Database (PIP)
[semantic-router] semantic-router exposed to compromised litellm wheel (CVE-2026-42208) via unbounded transitive pinGithub Advisory Database (PIP) · 26 Jun 2026
Impact semantic-router versions 0.1.8 through 0.1.14 declare litellm>=1.61.3 with no upper bound. During the window in which litellm==1.82.8 was the latest release on PyPI, a fresh install of any affected semantic-router version could resolve to that compromised wheel. The malicious litellm==1.82.8 wheel ships a litellm_init.pth file that executes on Python interpreter startup — no import required. It collects and exfiltrates: Process environment variables AWS / GCP / Azure credentials SSH keys, Kubernetes configs, shell history Database credentials and CI/CD secrets Cryptocurrency...
Recent mention · Rapid7
Weekly Metasploit Update: Modules for Audiobookshelf, LiteLLM, Next.js, Dalfox and moreRapid7 · 26 Jun 2026
Help shape the future of Metasploit FrameworkWe are planning future work in relation to the evasion capabilities present in Metasploit Framework, and how they function/are presented to users. We are currently accepting responses to our feedback form, which means that you can shape the future of how evasive capabilities are implemented in Metasploit Framework. The proposal for the changes can be found here, and you can submit your responses to the form here. The form will stop accepting responses on the 1st of July, 2026.New module content and improvements have also been added this week....
These PoCs are unverified and could contain malware. Use at your own risk.
nuclei · Created Unknown
Timeline
Public proof-of-concept code published
Listed in the CISA Known Exploited Vulnerabilities catalog
Scanner coverage available
High-confidence, third-party attested exploitation
Vulnerability disclosed publicly
Identifier reserved by the CNA
Pro API
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
GET /api/v2/pro/kevs/CVE-2026-42208
Free JSON includes basic KEV fields{
"cve_id": "CVE-2026-42208",
"confidence": "Confirmed",
"cvss_score": 9.3,
"cvss_estimated": false,
"epss_score": 0.8942,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}
Early warning alerts
Receive curator-selected alerts when exploitation activity warrants attention. Each alert includes the evidence and context needed to decide what requires attention now.