CVE-2026-12799Public exploitNetwork attack vector

Cross-tenant user enumeration via whitelisted endpoint

Published Jun 21, 2026 · Updated Jun 21, 2026

Improper authorization in BerriAI LiteLLM 1.82.0 through 1.82.2 allows remote authenticated users to enumerate all proxy users. The /user/filter/ui route is placed in info_routes, causing non_proxy_admin_allowed_routes_check to skip RBAC, while ui_view_users performs no caller-scope check. Any valid low-privilege API key on a PostgreSQL-backed proxy can retrieve administrator and cross-tenant user IDs and email addresses.

CVSS severity4.3
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in BerriAI LiteLLM 1.82.0 through 1.82.2 allows remote authenticated users to enumerate all proxy users. The /user/filter/ui route is placed in info_routes, causing non_proxy_admin_allowed_routes_check to skip RBAC, while ui_view_users performs no caller-scope check. Any valid low-privilege API key on a PostgreSQL-backed proxy can retrieve administrator and cross-tenant user IDs and email addresses.

The record

CVE
CVE-2026-12799
Published
Jun 21, 2026
Updated
Jun 21, 2026
Vendor
Berri AI
Product
LiteLLM
Classifications
CWE-266, CWE-285, T1087
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=1.82.0
  2. Affected versionversion=1.82.1
  3. Affected versionversion=1.82.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Berri AI · LiteLLMversion=1.82.0; version=1.82.1; version=1.82.2

Published CVSS scores

4.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0VulDBAV:N/AC:L/Au:S/C:P/I:N/A:N
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
CWE-285Improper Authorization
T1087Account Discovery

Public exploit references

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

Technologies

Your stack

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Your stack

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