CVE-2026-116824

YesWiki before 4.7.0 Stored XSS via Referer Header in referrers_sites Handler

State: Published
Severity: 5.3 Medium
Published: Oct 26, 2026
Updated: Oct 26, 2026
Reserved: Oct 26, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N	VulnCheck
3.1	6.1 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	VulnCheck

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
yeswikiYesWiki	before 4.7.0Affected 4.7.0Not affected

References

GitHub Security Advisory (GHSA-xcwg-2pj5-3qm4)vendor-advisory
VulnCheck Advisory: YesWiki before 4.7.0 Stored XSS via Referer Header in referrers_sites Handlerthird-party-advisory

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