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CVE-2026-61833

8.1 · HIGH

zot is a container image and artifact registry based on the Open Container Initiative Distribution Specification.

Published Sep 18, 2026CWE-285EPSS 0.81%

Overview

CVE-2026-61833 is a high-severity vulnerability. It was published on September 18, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/project-zot/zot/commit/7bb211bcd4352b90f3e99752607fbd1f050bf7caGitHubgithub.com/project-zot/zot/pull/4161GitHubgithub.com/project-zot/zot/releases/tag/v2.1.18GitHubgithub.com/project-zot/zot/security/advisories/GHSA-qg67-7m6v-qg25GitHubgithub.com/project-zot/zot/security/advisories/GHSA-qg67-7m6v-qg25

How CyberStrike helps

Frequently asked questions

What is CVE-2026-61833?

CVE-2026-61833 is a high-severity vulnerability. It was published on September 18, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-61833?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-61833?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-61833?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-61833 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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