CVE-2026-61833 Details
Description
zot is a container image and artifact registry based on the Open Container Initiative Distribution Specification. Prior to 2.1.18, the bearer authentication handler in pkg/api/authn.go maps every HTTP method other than GET and HEAD to the push action, so DELETE requests are not checked for the distinct delete permission. Bearer-authenticated requests also bypass the fine-grained DistSpecAuthzHandler path in pkg/api/authz.go, while DeleteManifest and DeleteBlob perform no independent delete-permission check. A remote attacker with a bearer token limited to pull and push actions can therefore delete manifests and blobs within the token's repository scope, making images unavailable and allowing repository history to be altered despite the token lacking delete authorization. This issue is fixed in version 2.1.18.
A vulnerability in Zot, a container image registry, prior to version 2.1.18, allows unauthorized deletion of manifests and blobs. The issue arises because the bearer authentication handler incorrectly maps all HTTP methods except GET and HEAD to the 'push' action, failing to assign the 'delete' action to DELETE requests. This oversight, combined with a bypass of the authorization middleware for bearer-authenticated requests, enables remote attackers with push-only tokens to delete resources within the token's repository scope, contrary to the intended permissions.
Users can upgrade to Zot version 2.1.18 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 18, 2026CISA-ADP
Assessed Sep 23, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/project-zot/zot/security/advisories/GHSA-qg67-7m6v-qg25 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/project-zot/zot/commit/7bb211bcd4352b90f3e99752607fbd1f050bf7ca | [email protected] | Source CodeVendor |
| https://github.com/project-zot/zot/pull/4161 | [email protected] | Source CodeVendor |
| https://github.com/project-zot/zot/releases/tag/v2.1.18 | [email protected] | Release NotesVendor |
| https://github.com/project-zot/zot/security/advisories/GHSA-qg67-7m6v-qg25 | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-285 | Improper Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| project-zot zot | <= v2.1.15 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 23, 2026 | CVE Modified | CISA-ADP |
| Sep 18, 2026 | New CVE Received | [email protected] |