CVE-2013-4338
wp-includes/functions.php in WordPress before 3.6.1 does not properly determine whether data has...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2013-4338- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-94
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2013-4338- Updated
- 2026-11-02
EUVDEUVD-2013-4224 No score
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.
- Record
EUVD-2013-4224- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-j273-w3x2-xgpg No score
wp-includes/functions.php in WordPress before 3.6.1 does not properly determine whether data has...
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.
- Record
GHSA-j273-w3x2-xgpg- Weakness
- CWE-94
- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2013-4338- Updated
- 2026-11-02
OSVDEBIAN-CVE-2013-4338 No score
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.
- Record
DEBIAN-CVE-2013-4338- Updated
- 2026-11-02
OSVMGASA-2013-0285 No score
Updated wordpress and php-phpmailer packages fix security vulnerabilities
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 (CVE-2013-4338).
WordPress before 3.6.1 does not properly validate URLs before use in an HTTP redirect, which allows remote attackers to bypass intended redirection restrictions via a crafted string (CVE-2013-4339).
wp-admin/includes/post.php in WordPress before 3.6.1 allows remote authenticated users to spoof the authorship of a post by leveraging the Author role and providing a modified user_ID parameter (CVE-2013-4340).
The get_allowed_mime_types function in wp-includes/functions.php in WordPress before 3.6.1 does not require the unfiltered_html capability for uploads of .htm and .html files, which might make it easier for remote authenticated users to conduct cross-site scripting (XSS) attacks via a crafted file (CVE-2013-5738).
The default configuration of WordPress before 3.6.1 does not prevent uploads of .swf and .exe files, which might make it easier for remote authenticated users to conduct cross-site scripting (XSS) attacks via a crafted file, related to the get_allowed_mime_types function in wp-includes/functions.php (CVE-2013-5739).
Additionally, php-phpmailer has been updated to a newer version required by the updated wordpress.
- Record
MGASA-2013-0285- Updated
- 2026-11-02
OSVUBUNTU-CVE-2013-4338 No score
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.
- Record
UBUNTU-CVE-2013-4338- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
wordpressDebian:12 |
before 3.6.1+dfsg-1 | 3.6.1+dfsg-1 |
wordpressDebian:13 |
before 3.6.1+dfsg-1 | 3.6.1+dfsg-1 |
wordpressDebian:14 |
before 3.6.1+dfsg-1 | 3.6.1+dfsg-1 |
wordpressDebian:6.0 From an advisory covering 5 CVEs |
before 3.6.1+dfsg-1~deb6u1, plus listed versions 3.0.4+dfsg-13.0.5+dfsg-0+squeeze13.0.5+dfsg-13.2.1+dfsg-13.2.1+dfsg-2 Show 17 moreShow less3.2.1+dfsg-33.3+dfsg-13.3.1+dfsg-13.3.2+dfsg-13.3.2+dfsg-1~squeeze13.4+dfsg-13.4+dfsg-23.4+dfsg-33.4.1+dfsg-13.4.2+dfsg-13.5+dfsg-13.5.1+dfsg-13.5.1+dfsg-23.5.2+dfsg-13.5.2+dfsg-1~deb6u13.5.2+dfsg-1~deb7u13.6+dfsg-1 |
3.6.1+dfsg-1~deb6u1 |
wordpressDebian:7 From an advisory covering 5 CVEs |
before 3.6.1+dfsg-1~deb7u1, plus listed versions 3.5.1+dfsg-23.5.2+dfsg-13.5.2+dfsg-1~deb6u13.5.2+dfsg-1~deb7u13.6+dfsg-1 Show 9 moreShow less3.6.1+dfsg-1~deb6u13.6.1+dfsg-1~deb6u23.6.1+dfsg-1~deb6u33.6.1+dfsg-1~deb6u43.6.1+dfsg-1~deb6u53.6.1+dfsg-1~deb6u63.6.1+dfsg-1~deb6u73.6.1+dfsg-1~deb6u83.6.1+dfsg-1~deb6u9 |
3.6.1+dfsg-1~deb7u1 |
wordpressMageia:2 From an advisory covering 5 CVEs |
before 3.6.1-1.mga2 | 3.6.1-1.mga2 |
php-phpmailerMageia:2 From an advisory covering 5 CVEs |
before 5.2.7-0.20130917.1.mga2 | 5.2.7-0.20130917.1.mga2 |
wordpressMageia:3 From an advisory covering 5 CVEs |
before 3.6.1-1.mga3 | 3.6.1-1.mga3 |
php-phpmailerMageia:3 From an advisory covering 5 CVEs |
before 5.2.7-0.20130917.1.mga3 | 5.2.7-0.20130917.1.mga3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2013-4338 is a high vulnerability (CVSS 7.5) in Wordpress, published September 12, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 9.06%, the 95th percentile. Fixed in wordpress 3.6.1+dfsg-1.
References
lists.fedoraproject.org/pipermail/package-announce/2013-September/116832.html
core.trac.wordpress.org/changeset/25325
debian.org/security/2013/dsa-2757
codex.wordpress.org/Version_3.6.1
wordpress.org/news/2013/09/wordpress-3-6-1
Show 8 moreShow less
nvd.nist.gov/vuln/detail/CVE-2013-4338
github.com/advisories/GHSA-j273-w3x2-xgpg
security-tracker.debian.org/tracker/CVE-2013-4338
advisories.mageia.org/MGASA-2013-0285.html
bugs.mageia.org/show_bug.cgi?id=11218
ubuntu.com/security/CVE-2013-4338
cve.org/CVERecord?id=CVE-2013-4338