CVE-2026-116824

YesWiki before 4.7.0 contains a stored cross-site scripting vulnerability in handlers/page/referrers_sites.php that allows unauthenticated attackers to inject scripts via crafted Referer headers. Attackers can send a Referer hostname containing HTML metacharacters that renders unescaped, executing JavaScript for any referrer-sites page visitor to perform same-origin authenticated actions.

Score

CVSS 3.1 6.1 Medium

Status

Deferred - disclosure@vulncheck.com

Published

2026-10-26

Last modified

2026-10-27

Weaknesses

CWE-79

Affected products

• Yeswiki (Yeswiki)

References

• https://github.com/YesWiki/yeswiki/security/advisories/GHSA-xcwg-2pj5-3qm4
• https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-stored-xss-via-referer-header-in-referrers-sites-handler