CVE-2026-0601 Nexus Repository 3 - Cross-Site Scripting
Unauthenticated attackers can execute arbitrary JavaScript in victims' browsers via reflected XSS in Nexus Repository 3, requiring user interaction.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-0601?
CVE-2026-0601 is a medium-severity cross-site scripting vulnerability in Sonatype Nexus Repository, published on 14 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A reflected cross-site scripting vulnerability exists in Nexus Repository 3 that allows unauthenticated attackers to execute arbitrary JavaScript in a victim's browser through a specially crafted request requiring user interaction.
Weakness: CWE-79
Which versions are affected by CVE-2026-0601?
How do I fix CVE-2026-0601?
No fix has been published for CVE-2026-0601 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-2026-0601 being exploited?
There is no known exploitation of CVE-2026-0601 in the wild and no public exploit code.
Sources
Also known as GHSA-7j27-hv22-fqgw.