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CVE-2026-77125

7.1 · HIGH

A vulnerability was identified in Sonatype Nexus Repository 3 in which two blobstore group management REST API endpoints did not correctly enforce the intended authorization check.

Published Sep 2, 2026sonatypeCWE-863EPSS 0.29%

Overview

CVE-2026-77125 is a high-severity vulnerability affecting sonatype nexus_repository_manager. It was published on September 2, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

A vulnerability was identified in Sonatype Nexus Repository 3 in which two blobstore group management REST API endpoints did not correctly enforce the intended authorization check. A user granted only the nexus:blobstores:create permission could invoke these endpoints to convert an existing blobstore into a group blobstore, an action that should require the nexus:blobstores:update permission instead. This could result in unauthorized modification of blobstore configuration without administrator approval. The nexus:blobstores:create permission is a named permission that must be explicitly granted by an administrator; it is not held by default.

Remediation

Check the references section for vendor advisories and patches from sonatype. Update nexus_repository_manager to the latest patched version. 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.

Affected products

VendorProductVersionsStatus
sonatypenexus_repository_manager>= 3.19.0, < 3.96.0Affected

References

Refhelp.sonatype.com/en/sonatype-nexus-repository-3-96-0-release-notes.htmlRefsupport.sonatype.com/hc/en-us/articles/54643114434451/

How CyberStrike helps

Frequently asked questions

What is CVE-2026-77125?

CVE-2026-77125 is a high-severity vulnerability affecting sonatype nexus_repository_manager. It was published on September 2, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-77125?

This vulnerability has a CVSS 3.1 base score of 7.1, 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-2026-77125?

Check the references section for vendor advisories and patches from sonatype. Update nexus_repository_manager to the latest patched version. 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-2026-77125?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-77125 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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