CVE-2026-41877 Stored XSS in R-SOFT DMS
Authenticated attackers can inject malicious scripts via file names in R-SOFT DMS, leading to code execution when other users view file lists.
- 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-2026-41877?
CVE-2026-41877 is a medium-severity cross-site scripting vulnerability in R-SOFT SERWIS DMS, published on 10 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
R-SOFT DMS is vulnerable to Stored XSS in file upload functionality. Authenticated attacker can inject arbitrary HTML and JS into the name of the file being uploaded, which will be executed when visiting file list or upload status by other users.
This issue was fixed in version v3.19-2832 and v3.17-2580.
Weakness: CWE-79
Which versions are affected by CVE-2026-41877?
How do I fix CVE-2026-41877?
No fix has been published for CVE-2026-41877 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-2026-41877 being exploited?
There is no known exploitation of CVE-2026-41877 in the wild and no public exploit code.
Sources
Also known as GHSA-c9ph-5j66-3j9f.