CVE-2014-2243

CVE-2014-2243 is a medium-severity vulnerability in Mediawiki with a CVSS 2.0 base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-362.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.8)
• EPSS exploit prediction: 2% (72nd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-362
• Affected product: Mediawiki
• Published: 2014-03-02
• Last modified: 2026-06-17

Description

includes/User.php in MediaWiki before 1.19.12, 1.20.x and 1.21.x before 1.21.6, and 1.22.x before 1.22.3 terminates validation of a user token upon encountering the first incorrect character, which makes it easier for remote attackers to obtain access via a brute-force attack that relies on timing differences in responses to incorrect token guesses.

Frequently asked questions

What is CVE-2014-2243?

includes/User.php in MediaWiki before 1.19.12, 1.20.x and 1.21.x before 1.21.6, and 1.22.x before 1.22.3 terminates validation of a user token upon encountering the first incorrect character, which makes it easier for remote attackers to obtain access via a brute-force attack that relies on timing differences in responses to incorrect token guesses.

How severe is CVE-2014-2243?

CVE-2014-2243 has a CVSS 2.0 base score of 5.8, rated medium severity.

Is CVE-2014-2243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-2243?

CVE-2014-2243 primarily affects Mediawiki. In total, 90 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-2243?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-2243 published?

CVE-2014-2243 was published on 2014-03-02 and last updated on 2026-06-17.

References

• http://lists.wikimedia.org/pipermail/mediawiki-announce/2014-February/000141.html
• http://openwall.com/lists/oss-security/2014/02/28/1
• http://openwall.com/lists/oss-security/2014/03/01/2
• https://bugzilla.redhat.com/show_bug.cgi?id=1071136
• https://bugzilla.wikimedia.org/show_bug.cgi?id=61346
• https://gerrit.wikimedia.org/r/#/q/I2a9e89120f7092015495e638c6fa9f67adc9b84f%2Cn%2Cz

Affected products (90)

• cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.10.0:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.10.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.10.0:rc2:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.10.1:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.10.2:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.10.3:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.10.4:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.11:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.11.0:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.11.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.11.1:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.11.2:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.12.0:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.12.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.12.1:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.12.2:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.12.3:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.12.4:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.13.0:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.13.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.13.0:rc2:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.13.1:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.13.2:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.13.3:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.13.4:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.14.0:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.14.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.14.1:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.15.0:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.15.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.15.1:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.15.2:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.15.3:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.15.4:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.15.5:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.16.0:*:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.16.0:beta1:*:*:*:*:*:*
• cpe:2.3:a:mediawiki:mediawiki:1.16.0:beta2:*:*:*:*:*:*

More vulnerabilities in Mediawiki

• CVE-2025-67484 — Critical (CVSS 9.8): Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files…
• CVE-2024-34502 — Critical (CVSS 9.8): An issue was discovered in WikibaseLexeme in MediaWiki before 1.39.6, 1.40.x before 1.40.2, and 1.41.x before 1.41.1.…
• CVE-2023-37303 — Critical (CVSS 9.8): An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. In certain situations, an attempt to…
• CVE-2023-29141 — Critical (CVSS 9.8): An issue was discovered in MediaWiki before 1.35.10, 1.36.x through 1.38.x before 1.38.6, and 1.39.x before 1.39.3. An…
• CVE-2022-29906 — Critical (CVSS 9.8): The admin API module in the QuizGame extension for MediaWiki through 1.37.2 (before…
• CVE-2022-29904 — Critical (CVSS 9.8): The SemanticDrilldown extension for MediaWiki through 1.37.2 (before e688bdba6434591b5dff689a45e4d53459954773) allows…

All CVEs affecting Mediawiki →

Other CWE-362 (Race Condition) vulnerabilities

• CVE-2022-27626 — Critical (CVSS 10.0): A vulnerability regarding concurrent execution using shared resource with improper synchronization ('Race Condition')…
• CVE-2015-8556 — Critical (CVSS 10.0): Local privilege escalation vulnerability in the Gentoo QEMU package before 2.5.0-r1.
• CVE-2014-0703 — Critical (CVSS 10.0): Cisco Wireless LAN Controller (WLC) devices 7.4 before 7.4.110.0 distribute Aironet IOS software with a race condition…
• CVE-2010-1228 — Critical (CVSS 10.0): Multiple race conditions in the sandbox infrastructure in Google Chrome before 4.1.249.1036 have unspecified impact and…
• CVE-2008-6598 — Critical (CVSS 10.0): Multiple race conditions in WANPIPE before 3.3.6 have unknown impact and attack vectors related to "bri restart logic."
• CVE-2026-46137 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: fix potential…

Browse all CWE-362 (Race Condition) vulnerabilities →