Medium severity5.3NVD Advisory· Published Oct 2, 2026· Updated Oct 2, 2026
CVE-2026-104454
CVE-2026-104454
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.
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Affected products
1Patches
Vulnerability mechanics
References
2News mentions
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