CVE-2025-13488 Nexus Repository 3 - Stored Cross-Site Scripting (XSS)
Authenticated attackers with upload privileges can execute arbitrary scripts in user contexts via stored XSS in Nexus Repository.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-13488?
CVE-2025-13488 is a medium-severity cross-site scripting vulnerability in Sonatype Nexus Repository, published on 4 Dec 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2025-13488?
How do I fix CVE-2025-13488?
No fix has been published for CVE-2025-13488 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-13488 being exploited?
There is no known exploitation of CVE-2025-13488 in the wild and no public exploit code.
Sources
Also known as GHSA-mqj2-wwmp-9qj3.