CVE-2014-5241

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-08-22 · updated 2026-06-17
Weakness: CWE-352

Description

The JSONP endpoint in includes/api/ApiFormatJson.php in MediaWiki before 1.19.18, 1.20.x through 1.22.x before 1.22.9, and 1.23.x before 1.23.2 accepts certain long callback values and does not restrict the initial bytes of a JSONP response, which allows remote attackers to conduct cross-site request forgery (CSRF) attacks, and obtain sensitive information, via a crafted OBJECT element with SWF content consistent with a restricted character set.

Affected products

Wikimedia Foundation MediaWiki: through 1.19.17; 1.19, 1.19-beta_1, 1.19-beta_2, 1.19.0, 1.19.1, 1.19.2 (+43)

References

http://advisories.mageia.org/MGASA-2014-0309.html
http://openwall.com/lists/oss-security/2014/08/14/5
http://secunia.com/advisories/59738
http://www.debian.org/security/2014/dsa-3011
http://www.mandriva.com/security/advisories?name=MDVSA-2014:153
https://bugzilla.wikimedia.org/show_bug.cgi?id=68187
https://lists.wikimedia.org/pipermail/mediawiki-announce/2014-July/000157.html
http://advisories.mageia.org/MGASA-2014-0309.html
http://openwall.com/lists/oss-security/2014/08/14/5
http://secunia.com/advisories/59738
http://www.debian.org/security/2014/dsa-3011
http://www.mandriva.com/security/advisories?name=MDVSA-2014:153

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