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I. Basic Information for CVE-2026-31801
Vulnerability Information

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Vulnerability Title
zot create-only policy allows overwrite attempts of existing latest tag (update permission not required)
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
zot 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
zot是The zot Project开源的一个 OCI 图像注册表。 zot 1.3.0版本至2.1.14版本存在安全漏洞,该漏洞源于dist-spec授权中间件对PUT /v2/{name}/manifests/{reference}请求的所需操作推断不当,可能导致授权绕过。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
project-zotzot >= 1.3.0, < v2.1.15 -
II. Public POCs for CVE-2026-31801
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III. Intelligence Information for CVE-2026-31801
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IV. Related Vulnerabilities
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