CVE-2026-52774 Details.
YesWiki Bazar Widget - Reflected XSS via 'id' Parameter
Atlas does not check this one. Works by exploiting the flaw.
The only reliable test for this one is to try the weakness itself, which can disturb the site. Atlas does not do that, so it does not run this check.
About CVE-2026-52774. What It Means.
YesWiki's Bazar widget handler reflects the id GET parameter into HTML attributes using strip_tags() only. strip_tags() does not escape double quotes, allowing an attacker to break out of the data-formid attribute and inject arbitrary event handlers.
Affected Product. What Is Hit.
- Vendor
- yeswiki
- Product
- YesWiki
References. Where To Read More.
FAQ
Common Questions.
YesWiki Bazar Widget - Reflected XSS via 'id' Parameter. YesWiki's Bazar widget handler reflects the id GET parameter into HTML attributes using strip_tags() only. strip_tags() does not escape double quotes, allowing an attacker to break out of the data-formid attribute and inject arbitrary event handlers.
No. The only reliable test for this one is to try the weakness itself, which can disturb the site. Atlas does not do that, so it does not run this check. The facts about CVE-2026-52774 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-52774 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update YesWiki 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-2026-52774. Atlas does not run a check for it, so nothing here says whether a particular site is affected.