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Vulnerability record · CVE-2026-31801 · published 10 March 2026

CVE-2026-31801: Zotregistry zot incorrect authorization vulnerability

Zotregistry · Zot

zot is ancontainer image/artifact registry based on the Open Container Initiative Distribution Specification. From 1.3.0 to 2.1.14, zot’s dist-spec authorization middleware infers the required action for PUT /v2/{name}/manifests/{reference} as create by default, and only switches to update when the tag already exists and reference != "latest". As a result, when latest already exists, a user who is allowed to create (but not allowed to update) can still pass the authorization check for an overwrite attempt of latest. This vulnerability is fixed in 2.1.15.

7.7 CVSS 3.1 High EPSS 0.31% · top 78.7% CWE-863 · Incorrect authorization
7.7CVSS 3.1 base score
0.31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

zot is ancontainer image/artifact registry based on the Open Container Initiative Distribution Specification. From 1.3.0 to 2.1.14, zot’s dist-spec authorization middleware infers the required action for PUT /v2/{name}/manifests/{reference} as create by default, and only switches to update when the tag already exists and reference != "latest". As a result, when latest already exists, a user who is allowed to create (but not allowed to update) can still pass the authorization check for an overwrite attempt of latest. This vulnerability is fixed in 2.1.15.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/project-zot/zot/security/advisories/GHSA-85jx-fm8m-x8c6 ExploitMitigationVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-31801), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.