CVE-2026-104466
YesWiki before 4.6.7 Stored XSS via Wakka Markdown Image src Attribute
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
YesWiki before 4.6.7 contains a stored cross-site scripting vulnerability in formatters/wakka.php that allows users who can edit pages or post comments to inject event handlers by placing quotes in markdown image URLs. Attackers can store a crafted markdown image whose src breaks out of the attribute to add an onerror handler, executing JavaScript in viewers' browsers, including administrators.
| CWE | CWE-79 |
| Vendor | yeswiki |
| Product | yeswiki |
| Published | Oct 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
YesWiki / yeswiki
0 < 4.6.7
References
Credits
🔍 sondt99