CVE-2025-53865 Roundup is vulnerable to XSS through interactions between URLs and issue tracker templates
Attackers can inject malicious scripts via URLs in Roundup issue tracker templates, potentially leading to code execution or account takeover.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-53865?
CVE-2025-53865 is a medium-severity cross-site scripting vulnerability in roundup-tracker Roundup, published on 13 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In Roundup before 2.5.0, XSS can occur via interaction between URLs and issue tracker templates (devel and responsive).
Weakness: CWE-79
Which versions are affected by CVE-2025-53865?
3 open source packages ship an affected version, including roundup.
| Package | Affected | Fixed in |
|---|---|---|
roundup PyPI | All versions | 2.5.0 |
roundup PyPI | All versions | 2.5.0 |
roundup PyPI | All versions | 2.5.0 |
How do I fix CVE-2025-53865?
Upgrade roundup to 2.5.0 or later.
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-2025-53865 being exploited?
There is no known exploitation of CVE-2025-53865 in the wild and no public exploit code.
Sources
Also known as GHSA-qxh9-qmf2-rhwc, PYSEC-2025-69, UBUNTU-CVE-2025-53865.