CVE-2026-104454
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Oct 02, 2026
Vendor
unknown
Description
YesWiki before 4.6.7 contains an algorithmic-complexity denial of service in the wakka.php formatter due to an O(n^2) markdown-link regex. Unauthenticated attackers can submit a small crafted body of bracket characters to the page-edit preview endpoint to pin PHP-FPM workers and saturate the pool.