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CVE-2009-3622

Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote...

4.3 MediumFix available

Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated "UTF-8" substrings, related to the mb_convert_encoding function in PHP.

Exploit likelihood

5.83%Up 2.0 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 4.3

Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated "UTF-8" substrings, related to the mb_convert_encoding function in PHP.

Record
CVE-2009-3622
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness
CWE-310
Updated
2026-11-02
CVE List No score

Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated "UTF-8" substrings, related to the mb_convert_encoding function in PHP.

Record
CVE-2009-3622
Updated
2026-11-02
EUVDEUVD-2009-3603 No score

Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated "UTF-8" substrings, related to the mb_convert_encoding function in PHP.

Record
EUVD-2009-3603
Updated
2026-11-03
GitHub AdvisoriesGHSA-m4j7-w5vj-fwff No score

Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote...

Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated "UTF-8" substrings, related to the mb_convert_encoding function in PHP.

Record
GHSA-m4j7-w5vj-fwff
Updated
2026-11-02
OSV No score

Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated "UTF-8" substrings, related to the mb_convert_encoding function in PHP.

Record
CVE-2009-3622
Updated
2026-11-02
OSVDEBIAN-CVE-2009-3622 No score

Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated "UTF-8" substrings, related to the mb_convert_encoding function in PHP.

Record
DEBIAN-CVE-2009-3622
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
wordpress
Debian:12
 before 2.8.5-1
2.8.5-1
wordpress
Debian:13
 before 2.8.5-1
2.8.5-1
wordpress
Debian:14
 before 2.8.5-1
2.8.5-1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-3622 is a medium vulnerability (CVSS 4.3) in Wordpress, published October 23, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.83%, the 93rd percentile. Fixed in wordpress 2.8.5-1.

References

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