What’s Vulnerable › Vulnerabilities

CVE-2026-61833: zot: Bearer authentication maps DELETE to push scope, allowing unauthorized deletion

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-18 · updated 2026-09-30
• Weakness: CWE-285

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.

Affected products

• project-zot zot: before 2.1.18

References

• https://github.com/project-zot/zot/commit/7bb211bcd4352b90f3e99752607fbd1f050bf7ca
• https://github.com/project-zot/zot/pull/4161
• https://github.com/project-zot/zot/releases/tag/v2.1.18
• https://github.com/project-zot/zot/security/advisories/GHSA-qg67-7m6v-qg25
• https://github.com/project-zot/zot/security/advisories/GHSA-qg67-7m6v-qg25

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