LiteLLM Weak JWT Authentication via Email-Based User Lookup
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.
CVE-2026-93355
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93355
litellm
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/BerriAI/litellm",
"vendor": "BerriAI",
"product": "litellm",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "1.102.1"
},
{
"status": "affected",
"version": "0",
"versionType": "git",
"lessThanOrEqual": "f4308bc124eebc783dfc51790ce8db27ed21ae00"
}
],
"packageURL": "pkg:github/BerriAI/litellm",
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-93355
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #5598 · Revision 1
- Added to Heist Feed
- Publisher date