CVE-2025-13488

Unknown Unknown - Not Provided

BaseFortify

Publication date: 2025-12-04

Last updated on: 2025-12-08

Assigner: Sonatype

Description

Due to a regression introduced in version 3.83.0, a security header is no longer applied to certain user-uploaded content served from repositories. This may allow an authenticated attacker with repository upload privileges to exploit a stored cross-site scripting (XSS) vulnerability with user context.

CVSS Scores

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Meta Information

Published

2025-12-04

Last Modified

2025-12-08

Generated

2026-07-06

AI Q&A

2025-12-04

EPSS Evaluated

2026-07-05

NVD

CVE-2025-13488

EUVD

EUVD-2025-201259

Affected Vendors & Products

Vendor	Product	Version / Range
sonatype	nexus_repository	3.83.0

Helpful Resources

Exploitability

CWE

KEV

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

Executive Summary

This vulnerability is a regression introduced in version 3.83.0 where a security header is no longer applied to certain user-uploaded content served from repositories. As a result, an authenticated attacker with repository upload privileges can exploit a stored cross-site scripting (XSS) vulnerability using the context of the user viewing the content.

Impact Analysis

The vulnerability can allow an attacker who has upload privileges to inject malicious scripts into user-uploaded content. When other users view this content, the malicious scripts execute in their browsers with their user context, potentially leading to unauthorized actions, data theft, or session hijacking.

Mitigation Strategies

To mitigate this vulnerability, upgrade your Sonatype Nexus Repository to version 3.87.0 or later, where the regression causing the missing security header has been fixed. [1]

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