CVE-2026-45831
CVE-2026-45831 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-863.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v4: 8.8
- EPSS exploit prediction: 0% (15th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-36482
- Weakness: CWE-863
- Affected product: Trychroma Chromadb
- Published:
- Last modified:
Description
The SimpleRBACAuthorizationProvider authorization provider in versions 0.5.0 or later of the ChromaDB Python project evaluates whether a user holds a given permission but never checks which tenant, database, or collection that permission applies to allowing users to perform cross tenant actions.
Frequently asked questions
- What is CVE-2026-45831?
- The SimpleRBACAuthorizationProvider authorization provider in versions 0.5.0 or later of the ChromaDB Python project evaluates whether a user holds a given permission but never checks which tenant, database, or collection that permission applies to allowing users to perform cross tenant actions.
- How severe is CVE-2026-45831?
- CVE-2026-45831 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-2026-45831 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-45831?
- CVE-2026-45831 affects Trychroma Chromadb. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-45831?
- 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-2026-45831 have an EU (EUVD) identifier?
- Yes. CVE-2026-45831 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36482.
- When was CVE-2026-45831 published?
- CVE-2026-45831 was published on 2026-06-12 and last updated on 2026-06-17.
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-2026-45830 — High (CVSS 8.8): A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated…
All CVEs affecting Trychroma Chromadb →
Other CWE-863 (Incorrect Authorization) vulnerabilities
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- CVE-2026-48303 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9394 and earlier are affected by an Incorrect Authorization…
- CVE-2026-44330 — Critical (CVSS 10.0): free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the…
- CVE-2026-46595 — Critical (CVSS 10.0): Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of…
- CVE-2026-33105 — Critical (CVSS 10.0): Improper authorization in Microsoft Azure Kubernetes Service allows an unauthorized attacker to elevate privileges over…
- CVE-2026-32213 — Critical (CVSS 10.0): Improper authorization in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.
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