gcdRadar
archive/Patch now/AIR-2026-0215
closedclosed 28 Sep 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-93355: LiteLLM Weak JWT Authentication Vulnerability

LiteLLM

A weak authentication flaw in LiteLLM allowed users to impersonate others via unverified email claims in JWTs, potentially granting proxy admin privileges. No active exploitation was reported at the time of disclosure.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
8.1
EPSS
<0.01 · top 81% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
28 Sep 2026
last update
28 Sep 2026
CVE ids
CVE-2026-93355other records

Timeline · 1

  1. 28 Sep 2026CVE-2026-93355: LiteLLM contains a weak authentication vulnerability that allows an attacker holding a valid JWT from the configured identity…

Sources · 1

Advisories and databases

  1. 2026-09-28
    CVE-2026-93355: LiteLLM contains a weak authentication vulnerability that allows an attacker holding a valid JWT from the configured identity…
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-93355

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
litellmjwtauthentication-bypass
dates
happened 28 Sep 2026 · first reported 28 Sep 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 06:33Z · updated 2026-10-18 06:33Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-93355: LiteLLM Weak JWT Authentication Vulnerability

https://gcdradar.vercel.app/incidents/cve-2026-93355-litellm-weak-jwt-authentication-vulnerability · AIR-2026-0215 · closed 2026-09-28

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-09-28
- AI role: Attack on AI
- Products: LiteLLM
- CVE ids: CVE-2026-93355
- CVSS: 8.1

## Summary

A weak authentication flaw in LiteLLM allowed users to impersonate others via unverified email claims in JWTs, potentially granting proxy admin privileges. No active exploitation was reported at the time of disclosure.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-09-28: CVE-2026-93355: LiteLLM contains a weak authentication vulnerability that allows an attacker holding a valid JWT from the configured identity… (https://nvd.nist.gov/vuln/detail/CVE-2026-93355)

## Sources

- 2026-09-28 NVD: CVE-2026-93355: LiteLLM contains a weak authentication vulnerability that allows an attacker holding a valid JWT from the configured identity… https://nvd.nist.gov/vuln/detail/CVE-2026-93355

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

Related

  1. closed8.1
    LiteLLM LiteLLM: internal_user_viewer arbitrary local file read via vertex_ai_credentials

    Patch now · Disclosed · since 27 Oct 2026

    AI
  2. closed6.8
    LiteLLM LiteLLM reflected XSS vulnerability in /sso/debug/callback

    Patch now · Disclosed · since 27 Oct 2026

    AI
  3. closed
    LiteLLM LiteLLM 1.107.0 compromised via malicious Python startup hooks

    Supply chain · Exploited · since 23 Oct 2026

    AI
  4. closed9.9
    LiteLLM CVE-2026-114612: LiteLLM vulnerable to privilege escalation via cryptographic context reuse

    Patch now · Disclosed · Patched · since 22 Oct 2026 · updated 27 Oct 2026 · CVE-2026-114612

    AI
  5. closed6.3
    LiteLLM CVE-2026-108575: Improper authorization flaw in BerriAI LiteLLM secret resolution

    Patch now · Disclosed · since 11 Oct 2026 · CVE-2026-108575

    AI
  6. closed4.3
    LiteLLM CVE-2026-108574: Authorization bypass flaw in BerriAI LiteLLM

    Patch now · Disclosed · since 11 Oct 2026 · CVE-2026-108574

    AI