CVE-2026-31801
zot create-only policy allows overwrite attempts of existing latest tag (update permission not required)
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-863 |
| Vendor | project-zot |
| Product | zot |
| Published | Mar 10, 2026 |
| Last Updated | Mar 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None
Affected Versions
project-zot / zot
>= 1.3.0, < v2.1.15