Cross-site scripting (XSS) vulnerability in the CSS user subpage preview feature in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote attackers to inject arbitrary web script or HTML via the edit box in Special:MyPage/common.css
Published Apr 20, 2017
6.1
MEDIUMCVSS 3.0
EPSS 1.02%
Description
Cross-site scripting (XSS) vulnerability in the CSS user subpage preview feature in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote attackers to inject arbitrary web script or HTML via the edit box in Special:MyPage/common.css.
Affected products
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AV:N/AC:M/Au:N/C:N/I:P/A:N
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.02% (0.01016) | 61.98th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.02% (0.01016) | 58.64th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.31% (0.00310) | 51.96th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.21% (0.00208) | 59.72th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.21% (0.00208) | 59.03th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00208) | 56.98th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (4)
- http://www.securityfocus.com/bid/98053 vdb-entryx_refsource_BID
- https://bugzilla.redhat.com/show_bug.cgi?id=1369613 x_refsource_CONFIRMIssue Tracking
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2016-August/000195.html mailing-listx_refsource_MLISTMailing ListPatchVendor Advisory
- https://phabricator.wikimedia.org/T133147 x_refsource_CONFIRMPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/98053 | vdb-entryx_refsource_BID | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1369613 | x_refsource_CONFIRMIssue Tracking | |
| https://lists.wikimedia.org/pipermail/mediawiki-announce/2016-August/000195.html | mailing-listx_refsource_MLISTMailing ListPatchVendor Advisory | |
| https://phabricator.wikimedia.org/T133147 | x_refsource_CONFIRMPatchThird Party Advisory |
Change history (0)
No recorded changes yet.