How severe is CVE-2026-45830?

CVE-2026-45830 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-45830 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-45830?

CVE-2026-45830 affects Trychroma Chromadb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-45830?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-45830 have an EU (EUVD) identifier?

Yes. CVE-2026-45830 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36461.

When was CVE-2026-45830 published?

CVE-2026-45830 was published on 2026-06-12 and last updated on 2026-06-30.

CVE-2026-45830

CVE-2026-45830 is a high-severity vulnerability in Trychroma Chromadb with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.8
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36461
Weakness: CWE-639
Affected product: Trychroma Chromadb
Published: 2026-06-12
Last modified: 2026-06-30

Description

A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection regardless of which tenant they belong to.

Frequently asked questions

What is CVE-2026-45830?: A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection regardless of which tenant they belong to.
How severe is CVE-2026-45830?: CVE-2026-45830 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-45830 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-45830?: CVE-2026-45830 affects Trychroma Chromadb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-45830?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-45830 have an EU (EUVD) identifier?: Yes. CVE-2026-45830 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36461.
When was CVE-2026-45830 published?: CVE-2026-45830 was published on 2026-06-12 and last updated on 2026-06-30.

References

Affected products (1)

cpe:2.3:a:trychroma:chromadb:*:*:*:*:*:python:*:*

More vulnerabilities in Trychroma Chromadb

CVE-2026-45833 — High (CVSS 8.8): A code injection vulnerability in version 0.4.17 or later of the ChromaDB Python project allows an authenticated…
CVE-2026-45832 — High (CVSS 8.8): All V1 collection-level endpoints in ChromaDB's Python project pass None for the tenant and database to the…
CVE-2026-45831 — High (CVSS 8.8): The SimpleRBACAuthorizationProvider authorization provider in versions 0.5.0 or later of the ChromaDB Python project…

All CVEs affecting Trychroma Chromadb →

Other CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities

CVE-2025-40805 — Critical (CVSS 10.0): Affected devices do not properly enforce user authentication on specific API endpoints. This could facilitate an…
CVE-2024-45032 — Critical (CVSS 10.0): A vulnerability has been identified in Industrial Edge Management Pro (All versions < V1.9.5), Industrial Edge…
CVE-2026-34037 — Critical (CVSS 9.9): Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to…
CVE-2026-52782 — Critical (CVSS 9.9): OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, there is an IDOR through…
CVE-2026-45552 — Critical (CVSS 9.9): Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior,…
CVE-2026-29200 — Critical (CVSS 9.9): A critical IDOR vulnerability has been discovered in Comet Backup affecting all versions from 20.11.0 to 26.1.1 and…

Browse all CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities →