CVE-2026-104454

Published 2 October 2026 · tracked since 3 October 2026

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.

References

• NVD — National Vulnerability Database
• CVE.org record (MITRE)
• CISA Known Exploited Vulnerabilities catalog

Latest tracked vulnerabilities

• CVE-2026-104466 MEDIUM 5.4
• CVE-2026-104460 HIGH 7.5
• CVE-2026-104457 HIGH 8.6
• CVE-2026-104450 MEDIUM 6.5
• CVE-2026-104439 MEDIUM 5.3
• CVE-2026-104440 MEDIUM 5.3
• CVE-2026-104441 MEDIUM 5.3
• CVE-2026-104414 HIGH 8.1
• CVE-2026-96990
• CVE-2026-94651

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