CVE-2026-104454

Published: Ott 02, 2026 Last Modified: Ott 02, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,9
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
MEDIUM 5,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: low

Description

AI Translation Available

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.

1333

Inefficient Regular Expression Complexity

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Cpu)
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
https://github.com/YesWiki/yeswiki/security/advisories/GHSA…
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-gf57-wg5m-h34q
https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-r…
https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-redos-via-wakka-php-e…