CVE-2026-104454

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Source
https://cve.org/CVERecord?id=CVE-2026-104454
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104454.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-104454
Aliases
  • GHSA-gf57-wg5m-h34q
Published
2026-10-02T11:38:25Z
Modified
2026-10-04T02:46:36Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
YesWiki before 4.6.7 ReDoS via wakka.php Edit-Preview Endpoint
Details

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.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-1333"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104454.json"
}
References

Affected packages

Git / github.com/yeswiki/yeswiki

Affected ranges

Type
GIT
Repo
https://github.com/yeswiki/yeswiki
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
07120ed8971047f504f7ec78060828f1895f475f
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "4.6.7"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

v4.*
v4.1.0
v4.1.5
v4.2.0
v4.2.1
v4.2.2
v4.3.0
v4.3.1
v4.4.0
v4.4.1
v4.4.2
v4.4.3
v4.5.1
v4.5.2
v4.5.3
v4.5.4
v4.5.5
v4.6.0
v4.6.2
v4.6.3
v4.6.4
v4.6.5
v4.6.6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104454.json"