CVE-2026-33265Public exploit

Authenticated RAG API access via shared JWT secret

Published Mar 18, 2026 · Updated Mar 18, 2026

Authentication bypass in LibreChat 0.8.1-rc2 allows remote authenticated users to access the RAG API with a LibreChat session JWT. The default Docker Compose deployment gives both services the same JWT_SECRET, and the RAG API accepts user tokens without an audience check. Exploitation requires RAG API network access and grants read, upload, replacement, and deletion access to stored documents.

CVSS severity9.0
Critical
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Authentication bypass in LibreChat 0.8.1-rc2 allows remote authenticated users to access the RAG API with a LibreChat session JWT. The default Docker Compose deployment gives both services the same JWT_SECRET, and the RAG API accepts user tokens without an audience check. Exploitation requires RAG API network access and grants read, upload, replacement, and deletion access to stored documents.

The record

CVE
CVE-2026-33265
Published
Mar 18, 2026
Updated
Mar 18, 2026
Vendor
Danny Avila
Product
LibreChat
Classifications
CWE-669, T1550.001
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.8.1-rc2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Danny Avila · LibreChatversion=0.8.1-rc2

Published CVSS scores

6.3MITRECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
8.0SBA ResearchCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0NVDCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-669Incorrect Resource Transfer Between Spheres
T1550.001Application Access Token

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo