Is CVE-2026-42208 in the CISA KEV catalog?

Yes. CVE-2026-42208 is on the CISA Known Exploited Vulnerabilities list, added 2026-05-08.

What is the CVSS severity of CVE-2026-42208?

CVE-2026-42208 has a CVSS v3 base score of 9.8 (CRITICAL).

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

CVE-2026-42208 has an EPSS score of 86.61% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-42208?

Upgrade litellm to 1.83.7 or later.

CVE & CISA-KEV Catalog

CVE-2026-42208

CRITICALCISA KEVEPSS 100th pctl

9.8

CVSS v3

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.

CWE-89SQL Injection

How to fix

Remediation Available

litellmNVD

Affected:>= 1.81.16, < 1.83.7Fixed in:1.83.7CVE-2026-42208derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

86.61%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-05-11

References

Patch1

github.com

Mitigation1

bugzilla.redhat.com

Third-Party Advisory2

Government Resource1

cisa.gov

Release Notes1

github.com

Related Vulnerabilities

Other CWE-89 (SQL Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-3704	High	7.5	100%	-	Fix
CVE-2015-7297	High	7.5	100%	-	-
CVE-2024-29824	High	8.8	100%	KEV	Fix
CVE-2023-34362	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-7481	High	7.5	100%	KEV + Ransom	Fix
CVE-2024-29826	High	8.8	100%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-15.