CVE-2026-61501 Rejetto HFS < 3.2.1 Stored XSS in Admin Log Viewer
Remote attackers can inject JavaScript into admin logs via crafted login attempts, leading to code execution and privilege escalation when admins view logs.
- 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-2026-61501?
CVE-2026-61501 is a medium-severity cross-site scripting vulnerability in rejetto hfs, published on 13 Jul 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
Rejetto HFS 3.0.0 through 3.2.0 renders log entries in the administration panel as HTML without sanitization. A remote unauthenticated attacker can submit a failed login with a crafted username that is written to the error log and executes JavaScript in an administrator's browser when the logs are viewed, allowing the attacker to create accounts or execute code on the server with the administrator's privileges.
Weakness: CWE-79
Which versions are affected by CVE-2026-61501?
How do I fix CVE-2026-61501?
No fix has been published for CVE-2026-61501 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-2026-61501 being exploited?
There is no known exploitation of CVE-2026-61501 in the wild and no public exploit code.
Sources
Also known as GHSA-fmrm-mcm3-c952.