HighVulnerability

CVE-2026-8828: ChromaDB Rust authorization flaw exposes data across tenant collections

Source: NVD(opens in a new tab)
Identifier: CVE-2026-8828
Published: June 12, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.4%

Summary

CVE-2026-8828 affects version 1.0.0 or later of the ChromaDB Rust project. A lack of authorization validation lets any authenticated user read, write, update, or delete data in any tenant's collection, regardless of which tenant they belong to. HiddenLayer assigned a CVSS 4.0 base score of 8.8 (High), and NVD had not yet provided its own assessment.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Details

Scores and exploitation

EPSS: 0.4%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on October 24, 2026.
Disclosure date: June 12, 2026

Weaknesses and techniques

Weakness (CWE): CWE-639

Classification

Attack type: Other
Attack sophistication: Trivial
AI component targeted: RAG
Impact: Confidentiality,
Integrity
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-8828

First tracked: June 12, 2026 at 08:09 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 90% (self-assessed)

Summary

Mitigation

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