CVE-2013-4338

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2013-09-12 · updated 2026-06-16
Weakness: CWE-94

Description

wp-includes/functions.php in WordPress before 3.6.1 does not properly determine whether data has been serialized, which allows remote attackers to execute arbitrary code by triggering erroneous PHP unserialize operations.

Affected products

WordPress: through 3.6

References

http://codex.wordpress.org/Version_3.6.1
http://core.trac.wordpress.org/changeset/25325
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/116828.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/116832.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/117118.html
http://wordpress.org/news/2013/09/wordpress-3-6-1/
http://www.debian.org/security/2013/dsa-2757
http://codex.wordpress.org/Version_3.6.1
http://core.trac.wordpress.org/changeset/25325
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/116828.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/116832.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/117118.html

Get alerted when CVE-2013-4338 or the next vulnerability affects your stack