Vulnerability · Published Oct 2, 2026 · Assigned by VulnCheck

CVE-2026-104450YesWiki before 4.6.7 ACL Bypass and Stored XSS via pointimage Action

Medium 6.5

In plain English

A medium-severity cross-site scripting in yeswiki from YesWiki. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 81.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

YesWiki before 4.6.7 contains a missing authorization flaw in the pointimage action (tools/attach/actions/pointimage.php), which saves content to an attacker-chosen page with write ACL checks bypassed. Unauthenticated attackers can POST pagetag, title, and description fields to any page rendering {{pointimage}} to append raw HTML or JavaScript to any wiki page, including pages whose write ACL restricts editing, causing stored cross-site scripting in viewers' and administrators' browsers.

Affected products (as reported)

Vendor	Product	Versions
YesWiki	yeswiki	0 – before 4.6.7

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

References

GitHub Security Advisory (GHSA-7547-q56p-h99v) vendor-advisory
VulnCheck Advisory: YesWiki before 4.6.7 ACL Bypass and Stored XSS via pointimage Action third-party-advisory