CVE-2026-89032

HIGHPre-NVD 7.77.7—
EchelonGraph scoreHIGH confidence

Score 7.7 from GitHub Security Advisory (severity: HIGH) published 2026-09-25. A secondary CVSS source baseline 7.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.7Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

BerriAI LiteLLM before 1.101.0-rc.1 contains a tenant isolation bypass vulnerability in the semantic cache layer that allows authenticated users to read other tenants' cached responses by exploiting a metadata key mismatch between _get_semantic_cache_tenant_scope() and _get_metadata_variable_name(). Attackers holding a valid virtual key can submit semantically similar prompts on affected routes such as /v1/responses and /bedrock/* to retrieve cached responses containing other tenants' personally identifiable information, financial data, or source code, and can cause agentic front-ends to auto-execute attacker-supplied tool calls under victim credentials by returning cached function_call or tool_calls payloads to a different principal.

CVSS v3
7.7
EG Score
7.7HIGHhigh confidence
EG Risk
35
EG Risk 35/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity77% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
17th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 25, 2026

Last Modified

October 1, 2026

Advisory Details (4)

Auto-updated Sep 25, 2026
Patch available. Sources: github_commit, github_release, github_pr.
generic

BerriAI LiteLLM < 1.101.0-rc.1 Tenant Isolation Bypass via Semantic Cache Layer | Advisories | VulnCheck

https://www.vulncheck.com/advisories/berriai-litellm-rc-1-tenant-isolation-bypass-via-semantic-cache-layer
github_commit

commit 16db51e2cfc2 (BerriAI/litellm)

Fix landed in BerriAI/litellm commit 16db51e2cfc2 — awaiting tagged release

https://github.com/BerriAI/litellm/commit/16db51e2cfc28e02bd460481e634a8403ea9265e
github_pr

feat(caching): add semantic_cache_scope to isolate semantic cache hits per end user

Fix merged in BerriAI/litellm PR #39590 on 2026-09-04 — awaiting tagged release

https://github.com/BerriAI/litellm/pull/39590
github_release Patch Available

v1.101.0-rc.1

Patch available: BerriAI/litellm v1.101.0-rc.1 (pre-release)

https://github.com/BerriAI/litellm/releases/tag/v1.101.0-rc.1

Vendor Advisories for CVE-2026-89032(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 32× in last 7d / 43× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-04 09:28 UTCGHSA enrichment
  2. 2026-10-03 20:38 UTCEG score recompute
  3. 2026-10-03 20:38 UTCGHSA enrichment
  4. 2026-10-03 07:45 UTCGHSA enrichment
  5. 2026-10-02 18:53 UTCEG score recompute
  6. 2026-10-02 18:53 UTCGHSA enrichment
  7. 2026-10-02 06:04 UTCEG score recompute
  8. 2026-10-02 06:03 UTCGHSA enrichment
  9. 2026-10-01 19:51 UTCEPSS rescore
  10. 2026-10-01 17:13 UTCGHSA enrichment
  11. 2026-10-01 04:21 UTCEG score recompute
  12. 2026-10-01 04:21 UTCGHSA enrichment
  13. 2026-10-01 04:09 UTCEG score recompute
  14. 2026-10-01 04:09 UTCGHSA enrichment
  15. 2026-09-30 18:41 UTCEG score recompute
  16. 2026-09-30 18:41 UTCGHSA enrichment
  17. 2026-09-30 17:38 UTCEG score recompute
  18. 2026-09-30 17:38 UTCGHSA enrichment
  19. 2026-09-30 17:27 UTCEG score recompute
  20. 2026-09-30 17:27 UTCGHSA enrichment
  21. 2026-09-30 15:04 UTCEPSS rescore
  22. 2026-09-30 07:49 UTCGHSA enrichment
  23. 2026-09-29 18:59 UTCEG score recompute
  24. 2026-09-29 18:58 UTCGHSA enrichment
  25. 2026-09-29 06:07 UTCEG score recompute
Show 18 more
  1. 2026-09-29 06:06 UTCGHSA enrichment
  2. 2026-09-28 17:17 UTCEG score recompute
  3. 2026-09-28 17:16 UTCGHSA enrichment
  4. 2026-09-28 13:52 UTCEPSS rescore
  5. 2026-09-28 04:23 UTCGHSA enrichment
  6. 2026-09-27 15:34 UTCEG score recompute
  7. 2026-09-27 15:33 UTCGHSA enrichment
  8. 2026-09-27 13:48 UTCEPSS rescore
  9. 2026-09-27 02:42 UTCEG score recompute
  10. 2026-09-27 02:42 UTCGHSA enrichment
  11. 2026-09-26 15:59 UTCEPSS rescore
  12. 2026-09-26 13:51 UTCEG score recompute
  13. 2026-09-26 13:51 UTCGHSA enrichment
  14. 2026-09-26 06:29 UTCEG score recompute
  15. 2026-09-26 06:29 UTCGHSA enrichment
  16. 2026-09-25 17:37 UTCEG score recompute
  17. 2026-09-25 16:24 UTCEG score recompute
  18. 2026-09-25 16:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-89032?
CVE-2026-89032 is a high vulnerability published on September 25, 2026. BerriAI LiteLLM before 1.101.0-rc.1 contains a tenant isolation bypass vulnerability in the semantic cache layer that allows authenticated users to read other tenants' cached responses by exploiting a metadata key mismatch between getsemanticcachetenantscope() and getmetadatavariablename().…
When was CVE-2026-89032 disclosed?
CVE-2026-89032 was first published on September 25, 2026, with the most recent update on October 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-89032 actively exploited?
CVE-2026-89032 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (17th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-89032?
CVE-2026-89032 has a CVSS base score of 7.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-89032?
A fix for CVE-2026-89032 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-89032 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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