CVE-2026-77124
Received Received - Intake

Nexus Repository 3 Script Execution Bypass

Publication date: 2026-09-02

Last updated on: 2026-09-02

Assigner: Sonatype

Description
In affected versions of Nexus Repository 3, the script execution endpoint (POST /service/rest/v1/script/{name}/run) did not verify whether script execution had been administratively disabled. An account holding script-execution permission could continue to run previously-created scripts even after an administrator set nexus.scripts.allowCreation=false, undermining the expectation that this setting fully blocks script execution.

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Meta Information

Published
2026-09-02
Last Modified
2026-09-02
Generated
2026-09-03
AI Q&A
2026-09-02
EPSS Evaluated
N/A
NVD
CVE-2026-77124
EUVD
EUVD-2026-70229

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
sonatype nexus_repository 3
sonatype nexus_repository 3.96.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-184 The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete.

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Executive Summary

CVE-2026-77124 is a vulnerability in Sonatype Nexus Repository 3 where the script execution endpoint did not enforce the administrative setting to disable script execution. Specifically, the POST /service/rest/v1/script/{name}/run endpoint allowed accounts with script-execution permission to run previously created scripts even after an administrator set nexus.scripts.allowCreation to false.

Detection Guidance

Check if the Script API is enabled by reviewing Nexus Repository configuration files for the presence of nexus.scripts.allowCreation setting. Verify if any scripts exist in the system by inspecting the /service/rest/v1/script endpoint. Monitor for unauthorized POST requests to /service/rest/v1/script/{name}/run endpoints.

Impact Analysis

This vulnerability allows unauthorized script execution, potentially leading to system compromise, data theft, or unauthorized changes. Attackers with script-execution permissions could maintain access even after administrators disable scripting, undermining security controls.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating compliance requirements for GDPR (data protection) and HIPAA (health information security). It undermines administrative controls meant to enforce security policies.

Mitigation Strategies
  • Upgrade to Nexus Repository 3 CE/Pro version 3.96.0 or later to fully remediate the issue.
  • Set nexus.scripts.allowCreation to false in the configuration.
  • Delete all stored scripts from the system.
  • Verify that scripting functionality is disabled by checking the administrative settings.

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