CVE-2026-27645 Details.
Changedetection.io RSS Single Watch - Cross-Site Scripting
Atlas does not check this one. Needs a scripted sequence.
This check is a series of requests where each step depends on the last, often after logging in. Atlas runs single, read-only probes, so it does not run this one.
About CVE-2026-27645. What It Means.
changedetection.io < 0.54.1 contains a stored XSS caused by unescaped reflection of UUID path parameter in RSS single-watch endpoint, letting remote attackers execute JavaScript in victim's browser, exploit requires victim to visit crafted URL.
Affected Product. What Is Hit.
The record for CVE-2026-27645 does not name a vendor or product yet.
FAQ
Common Questions.
Changedetection.io RSS Single Watch - Cross-Site Scripting. changedetection.io < 0.54.1 contains a stored XSS caused by unescaped reflection of UUID path parameter in RSS single-watch endpoint, letting remote attackers execute JavaScript in victim's browser, exploit requires victim to visit crafted URL.
No. This check is a series of requests where each step depends on the last, often after logging in. Atlas runs single, read-only probes, so it does not run this one. The facts about CVE-2026-27645 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-27645 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update the affected software to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-27645. Atlas does not run a check for it, so nothing here says whether a particular site is affected.