CVE-2026-84377Network attack vectorHinoki check available

Authenticated credential theft and SSRF via routing overrides

Published Sep 2, 2026 · Updated Sep 3, 2026

SSRF in BerriAI LiteLLM before 1.88.6 and 1.89.0 through 1.96.1 allows remote authenticated users to steal provider credentials. Denylist validation in proxy request processing fails to inspect nested, path, and bracket-notation values, so routing overrides retain the operator's stored key. An authenticated proxy key is required; successful exploitation exposes upstream secrets and permits requests to internal services.

CVSS severity6.5
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SSRF in BerriAI LiteLLM before 1.88.6 and 1.89.0 through 1.96.1 allows remote authenticated users to steal provider credentials. Denylist validation in proxy request processing fails to inspect nested, path, and bracket-notation values, so routing overrides retain the operator's stored key. An authenticated proxy key is required; successful exploitation exposes upstream secrets and permits requests to internal services.

The record

CVE
CVE-2026-84377
Published
Sep 2, 2026
Updated
Sep 3, 2026
Vendor
Berri AI
Product
LiteLLM
Classifications
CWE-918, T1528
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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=< 1.88.6
  2. Affected versionversion=>= 1.89.0, < 1.96.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Berri AI · LiteLLMversion=< 1.88.6; version=>= 1.89.0, < 1.96.2

Published CVSS scores

6.5BerriAICVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1528Steal Application Access Token

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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