CVE-2026-17596
Received Received - Intake

Stored XSS in Nexus Repository 3

Publication date: 2026-08-07

Last updated on: 2026-08-07

Assigner: Sonatype

Description
Nexus Repository 3 was found to be vulnerable to stored cross-site scripting (XSS). A user with the nexus:blobstores:create or nexus:blobstores:update permission could set a blob store name containing malicious script content, which would later execute in the browser of another user viewing system health-check status. This issue has been fixed in version 3.95.0.

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Meta Information

Published
2026-08-07
Last Modified
2026-08-07
Generated
2026-08-07
AI Q&A
2026-08-07
EPSS Evaluated
N/A
NVD
CVE-2026-17596
EUVD
EUVD-2026-54518

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
sonatype nexus_repository From 3.16.0 (inc) to 3.94.x (inc)
sonatype nexus_repository 3.95.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

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Executive Summary

This is a stored cross-site scripting (XSS) vulnerability in Sonatype Nexus Repository 3. A user with specific permissions can inject malicious script into a blob store name. When this name is displayed in system health-check status messages without proper encoding, the script executes in the browsers of users viewing the page.

Detection Guidance

Check Nexus Repository versions between 3.16.0 and 3.94.x. Review blob store names for suspicious script content. Inspect system health-check status page output for unencoded scripts. Use admin audit logs to track unauthorized blob store modifications.

Impact Analysis

An attacker could perform actions as a higher-privileged user, such as an administrator, by tricking users into viewing the health-check status page. This could lead to unauthorized access, data manipulation, or other malicious activities within the Nexus Repository environment.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate compliance requirements under GDPR, HIPAA, or other regulations. Organizations must address this issue to maintain data security and regulatory adherence.

Mitigation Strategies

Upgrade to Nexus Repository 3.95.0 or later. Restrict nexus:blobstores:create and nexus:blobstores:update permissions to trusted administrators only. Avoid viewing the health-check status page until the upgrade is complete.

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