CVE-2026-89032Public exploitNetwork attack vectorHinoki check available

Authenticated cross-tenant disclosure via cache scope mismatch

Published Sep 25, 2026 · Updated Sep 25, 2026

Tenant isolation bypass in Berri AI LiteLLM before 1.101.0-rc.1 allows remote authenticated users to read other tenants' cached responses. The semantic cache derives tenant scope with _get_semantic_cache_tenant_scope() but looks up a different metadata key through _get_metadata_variable_name(), allowing similar prompts to cross principal boundaries. A valid virtual key and an enabled semantic cache are required; exposed responses can contain sensitive data or tool-call payloads executed by agentic clients.

CVSS severityUnavailable
Unscored
EPSS probability0.27%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Tenant isolation bypass in Berri AI LiteLLM before 1.101.0-rc.1 allows remote authenticated users to read other tenants' cached responses. The semantic cache derives tenant scope with _get_semantic_cache_tenant_scope() but looks up a different metadata key through _get_metadata_variable_name(), allowing similar prompts to cross principal boundaries. A valid virtual key and an enabled semantic cache are required; exposed responses can contain sensitive data or tool-call payloads executed by agentic clients.

The record

CVE
CVE-2026-89032
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
Berri AI
Product
LiteLLM
Classifications
T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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=0 <1.101.0-rc.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Berri AI · LiteLLMversion=0 <1.101.0-rc.1

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1213Data from Information Repositories

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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