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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| YesWiki | yeswiki | < 4.6.7 | 4.6.7 |
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