CVE-2014-5241
The JSONP endpoint in includes/api/ApiFormatJson.php in MediaWiki before 1.19.18, 1.20.x through...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2014-5241- CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-352
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2014-5241- Updated
- 2026-11-02
EUVDEUVD-2014-5139 No score
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.
- Record
EUVD-2014-5139- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3qgm-2h8m-458c No score
The JSONP endpoint in includes/api/ApiFormatJson.php in MediaWiki before 1.19.18, 1.20.x through...
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.
- Record
GHSA-3qgm-2h8m-458c- Weakness
- CWE-352
- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2014-5241- Updated
- 2026-11-02
OSVDEBIAN-CVE-2014-5241 No score
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.
- Record
DEBIAN-CVE-2014-5241- Updated
- 2026-11-02
OSVMGASA-2014-0309 No score
Updated mediawiki packages fix security vulnerabilities
MediaWiki before 1.23.2 is vulnerable to JSONP injection in Flash (CVE-2014-5241), XSS in mediawiki.page.image.pagination.js (CVE-2014-5242), and clickjacking between OutputPage and ParserOutput (CVE-2014-5243).
This update provides MediaWiki 1.23.2, fixing these and other issues.
- Record
MGASA-2014-0309- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mediawikiDebian:12 |
before 1:1.19.18+dfsg-0.1 | 1:1.19.18+dfsg-0.1 |
mediawikiDebian:13 |
before 1:1.19.18+dfsg-0.1 | 1:1.19.18+dfsg-0.1 |
mediawikiDebian:14 |
before 1:1.19.18+dfsg-0.1 | 1:1.19.18+dfsg-0.1 |
mediawikiDebian:7 From an advisory covering 2 CVEs |
before 1:1.19.18+dfsg-0+deb7u1, plus listed versions 1:1.19.10+dfsg-11:1.19.11+dfsg-0+deb7u11:1.19.11+dfsg-11:1.19.12+dfsg-11:1.19.13+dfsg-1 Show 20 moreShow less1:1.19.14+dfsg-0+deb7u11:1.19.14+dfsg-0+deb7u21:1.19.14+dfsg-11:1.19.15+dfsg-0+deb7u11:1.19.15+dfsg-11:1.19.15+dfsg-21:1.19.16+dfsg-0+deb7u11:1.19.16+dfsg-11:1.19.17+dfsg-11:1.19.5-11:1.19.5-1+deb7u11:1.19.6-11:1.19.7+dfsg-11:1.19.7+dfsg-1.11:1.19.8+dfsg-11:1.19.8+dfsg-21:1.19.8+dfsg-2.11:1.19.8+dfsg-2.21:1.19.9+dfsg-11:1.19.9+dfsg-2 |
1:1.19.18+dfsg-0+deb7u1 |
mediawikiMageia:3 From an advisory covering 3 CVEs |
before 1.23.2-1.mga3 | 1.23.2-1.mga3 |
mediawikiMageia:4 From an advisory covering 3 CVEs |
before 1.23.2-1.mga4 | 1.23.2-1.mga4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| 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-2014-5241 is a medium vulnerability (CVSS 6.8) in Mediawiki, published August 5, 2014. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.84%, the 57th percentile. Fixed in mediawiki 1:1.19.18+dfsg-0.1.