gcdRadar
archive/Patch now/AIR-2026-0199
closedclosed 25 Sep 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-89032: BerriAI LiteLLM semantic cache tenant isolation bypass

LiteLLM

A metadata key mismatch in BerriAI LiteLLM's semantic cache layer permits authenticated tenants to retrieve cached responses belonging to other users. This exposes sensitive information such as PII and source code.

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
8.7
EPSS
<0.01 · top 81% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
25 Sep 2026
last update
25 Sep 2026
CVE ids
CVE-2026-89032other records

Timeline · 1

  1. 25 Sep 2026CVE-2026-89032: BerriAI LiteLLM before 1.101.0-rc.1 contains a tenant isolation bypass vulnerability in the semantic cache layer that allows…

Sources · 1

Advisories and databases

  1. 2026-09-25
    CVE-2026-89032: BerriAI LiteLLM before 1.101.0-rc.1 contains a tenant isolation bypass vulnerability in the semantic cache layer that allows…
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-89032

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
Data leakInfrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM02:2025 Sensitive Information DisclosureLLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
litellmcache-poisoning
dates
happened 25 Sep 2026 · first reported 25 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-2026-89032: BerriAI LiteLLM semantic cache tenant isolation bypass

https://gcdradar.vercel.app/incidents/cve-2026-89032-berriai-litellm-semantic-cache-tenant-isolati · AIR-2026-0199 · closed 2026-09-25

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-09-25
- AI role: Attack on AI
- Products: LiteLLM
- CVE ids: CVE-2026-89032
- CVSS: 8.7

## Summary

A metadata key mismatch in BerriAI LiteLLM's semantic cache layer permits authenticated tenants to retrieve cached responses belonging to other users. This exposes sensitive information such as PII and source code.

## What to do

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

## Latest updates

- 2026-09-25: CVE-2026-89032: BerriAI LiteLLM before 1.101.0-rc.1 contains a tenant isolation bypass vulnerability in the semantic cache layer that allows… (https://nvd.nist.gov/vuln/detail/CVE-2026-89032)

## Sources

- 2026-09-25 NVD: CVE-2026-89032: BerriAI LiteLLM before 1.101.0-rc.1 contains a tenant isolation bypass vulnerability in the semantic cache layer that allows… https://nvd.nist.gov/vuln/detail/CVE-2026-89032

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

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