Cross-site request forgery (CSRF) vulnerability in api/ApiQueryCheckUser.php in the CheckUser extension for MediaWiki, possibly Checkuser before 2.3, allows remote attackers to hijack the authentication of arbitrary users for requests that "perform sensitive write actions" via unspecified vectors
Published Oct 11, 2013
6.8
MEDIUMCVSS 2.0
EPSS 0.90%
Description
Cross-site request forgery (CSRF) vulnerability in api/ApiQueryCheckUser.php in the CheckUser extension for MediaWiki, possibly Checkuser before 2.3, allows remote attackers to hijack the authentication of arbitrary users for requests that "perform sensitive write actions" via unspecified vectors.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.90% (0.00897) | 58.12th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.90% (0.00897) | 54.73th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.27% (0.00265) | 47.95th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.37% (0.00371) | 73.49th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.37% (0.00371) | 71.85th | v3 (v2023.03.01) |
| May 24, 2023 | 0.37% (0.00371) | 68.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.38% (0.00378) | 68.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (7)
- http://lists.wikimedia.org/pipermail/mediawiki-announce/2013-September/000133.html mailing-listx_refsource_MLISTPatch
- http://osvdb.org/96908 vdb-entryx_refsource_OSVDBBroken Link
- http://seclists.org/oss-sec/2013/q3/553 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/62210 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://bugzilla.wikimedia.org/show_bug.cgi?id=45019 x_refsource_CONFIRMIssue TrackingPatch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/86893 vdb-entryx_refsource_XFVDB Entry
- https://git.wikimedia.org/commit/mediawiki%2Fextensions%2FCheckUser.git/99ad25d066ce6111e798427cba7f21526827f651 x_refsource_CONFIRMPatch
| Link | Providers | Tags |
|---|---|---|
| http://lists.wikimedia.org/pipermail/mediawiki-announce/2013-September/000133.html | mailing-listx_refsource_MLISTPatch | |
| http://osvdb.org/96908 | vdb-entryx_refsource_OSVDBBroken Link | |
| http://seclists.org/oss-sec/2013/q3/553 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.securityfocus.com/bid/62210 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://bugzilla.wikimedia.org/show_bug.cgi?id=45019 | x_refsource_CONFIRMIssue TrackingPatch | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/86893 | vdb-entryx_refsource_XFVDB Entry | |
| https://git.wikimedia.org/commit/mediawiki%2Fextensions%2FCheckUser.git/99ad25d066ce6111e798427cba7f21526827f651 | x_refsource_CONFIRMPatch |
Change history (0)
No recorded changes yet.