CVE-2025-52558 ChangeDetection.io XSS in watch overview
An XSS vulnerability in changedetection.io allows attackers to inject scripts via unfiltered watch errors, potentially compromising user sessions.
- 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
- Available
What is CVE-2025-52558?
CVE-2025-52558 is a high-severity cross-site scripting vulnerability in dgtlmoon changedetection.io, published on 23 Jun 2025. 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
changedetection.io is a free open source web page change detection, website watcher, restock monitor and notification service. Prior to version 0.50.4, errors in filters from website page change detection watches were not being filtered resulting in a cross-site scripting (XSS) vulnerability. This issue has been patched in version 0.50.4
Weakness: CWE-79
Which versions are affected by CVE-2025-52558?
3 open source packages ship an affected version, including changedetection.io and changedetection-io.
| Package | Affected | Fixed in |
|---|---|---|
changedetection.io PyPI | All versions | 0.50.4 |
changedetection-io PyPI | All versions | 0.50.4 |
changedetection-io PyPI | All versions | 0.50.4 |
How do I fix CVE-2025-52558?
Upgrade changedetection.io to 0.50.4 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-2025-52558 being exploited?
There is no known exploitation of CVE-2025-52558 in the wild and no public exploit code.
Sources
Also known as GHSA-hwpg-x5hw-vpv9, PYSEC-2026-1241.