CVE-2014-5241: n/a vulnerability

CVE-2014-5241: The JSONP endpoint in includes/api/ApiFormatJson.php in MediaWiki before 1.19.18, 1.20.x through 1.22.x bef...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 11:41 UTC (UTC+00:00)

Security readout for executives and security teams

This issue affects older MediaWiki installations. A weakness in the JSONP API response handling could let a remote attacker abuse a victim’s browser to make unauthorized requests and potentially read sensitive information. The source bundle names fixed MediaWiki releases from 2014, so current risk is mainly legacy or unpatched deployments. Exposure is most likely where internet-facing or intranet MediaWiki instances still run the affected legacy branches or unpatched distribution packages. The bundle does not identify affected CPEs beyond MediaWiki version ranges. Prioritize remediation for any still-running legacy MediaWiki service, especially public or authenticated business wikis. This is not flagged as actively exploited in the bundle, but the fixed releases are old enough that continued exposure suggests poor patch hygiene. Mitigation focus: Upgrade MediaWiki to 1.19.18, 1.22.9, 1.23.2, or a later supported release.; Apply relevant operating-system vendor security packages where MediaWiki is distribution-managed.; Retire unsupported MediaWiki branches rather than relying on partial workarounds..

Prepared: Jun 14, 2026, 07:14 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Aug 22, 2014, 17:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
[MediaWiki-announce] 20140730 MediaWiki Security and Maintenance Releases: 1.19.18, 1.22.9 and 1.23.2CVE reference · mailing-list, x_refsource_MLIST
https://bugzilla.wikimedia.org/show_bug.cgi?id=68187CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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