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.
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History
Tue, 10 Mar 2026 21:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | zot create-only policy allows overwrite attempts of existing latest tag (update permission not required) | |
| Weaknesses | CWE-863 | |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-03-10T20:54:15.164Z
Reserved: 2026-03-09T16:33:42.913Z
Link: CVE-2026-31801
Vulnrichment
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NVD
Status : Received
Published: 2026-03-10T21:16:49.850
Modified: 2026-03-10T21:16:49.850
Link: CVE-2026-31801
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Weaknesses