{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93355", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-09-17T18:41:40.758Z", "datePublished": "2026-09-28T19:26:01.155Z", "dateUpdated": "2026-09-28T19:26:01.155Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-09-28T19:26:01.155Z"}, "title": "LiteLLM Weak JWT Authentication via Email-Based User Lookup", "descriptions": [{"lang": "en", "value": "LiteLLM contains a weak authentication vulnerability that allows an attacker holding a valid JWT from the configured identity provider to authenticate as any existing user by exploiting an email-based fallback lookup in the JWT authentication flow without verifying the email_verified claim. Attackers can present a token with an unverified email address matching a victim's account to inherit the victim's role, including proxy_admin privileges, and permanently overwrite the victim's stored identity binding to retain persistent unauthorized access to administrative endpoints exposing API keys and user management."}], "tags": ["x_open-source"], "datePublic": "2026-09-28T00:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-1390", "description": "Weak Authentication", "type": "CWE"}]}], "affected": [{"defaultStatus": "unknown", "vendor": "BerriAI", "product": "litellm", "packageURL": "pkg:github/BerriAI/litellm", "repo": "https://github.com/BerriAI/litellm", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "1.102.1"}, {"status": "affected", "version": "0", "versionType": "git", "lessThanOrEqual": "f4308bc124eebc783dfc51790ce8db27ed21ae00"}]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 7.6, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "version": "3.1", "baseSeverity": "HIGH", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"}}], "references": [{"url": "https://www.ox.security/blog/litellm-an-ordinary-login-token-can-become-someone-elses-admin-account/", "name": "OXsecurity Blog", "tags": ["technical-description", "exploit"]}, {"url": "https://www.vulncheck.com/advisories/litellm-weak-jwt-authentication-via-email-based-user-lookup", "tags": ["third-party-advisory"]}], "credits": [{"lang": "en", "value": "Nir Zadok (Nirza) and Moshe Siman Tov Bustan of OXsecurity", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "vulncheck"}}}}

{}

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{}

{"created": "2026-09-28T20:30:06.944962+00:00", "updated": "2026-09-28T20:30:06.944971+00:00", "vendors": []}