Incomplete blacklist vulnerability in Sanitizer::checkCss in MediaWiki before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3 allows remote attackers to conduct cross-site scripting (XSS) attacks via certain non-ASCII characters in CSS, as demonstrated using variations of "expression" containing (1) full width characters or (2) IPA extensions, which are converted and rendered by Internet Explorer
Published Dec 13, 2013
4.3
MEDIUMCVSS 2.0
EPSS 2.10%
Description
Incomplete blacklist vulnerability in Sanitizer::checkCss in MediaWiki before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3 allows remote attackers to conduct cross-site scripting (XSS) attacks via certain non-ASCII characters in CSS, as demonstrated using variations of "expression" containing (1) full width characters or (2) IPA extensions, which are converted and rendered by Internet Explorer.
Affected products
No data.
Configuration 1
- 1.20
- 1.20.1
- 1.20.2
- 1.20.3
- 1.20.4
- 1.20.5
- 1.20.6
- 1.20.7
Configuration 2
Configuration 3
- ≤ 1.19.8
- 1.19
- 1.19
- 1.19
- 1.19.0
- 1.19.1
- 1.19.2
- 1.19.3
- 1.19.4
- 1.19.5
- 1.19.6
- 1.19.7
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.
No CVSS v3.0 score for this CVE.
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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.10% (0.02098) | 81.00th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.10% (0.02098) | 79.19th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.44% (0.00438) | 60.92th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.41% (0.00414) | 74.82th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.41% (0.00414) | 73.31th | v3 (v2023.03.01) |
| Jul 26, 2023 | 0.41% (0.00414) | 70.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.42% (0.00422) | 70.22th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
No CWE recorded.
References (8)
- http://lists.fedoraproject.org/pipermail/package-announce/2013-December/122998.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2013-December/123011.html vendor-advisoryx_refsource_FEDORA
- http://lists.wikimedia.org/pipermail/mediawiki-announce/2013-November/000135.html mailing-listx_refsource_MLIST
- http://secunia.com/advisories/57472 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2014/dsa-2891 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/63761 vdb-entryx_refsource_BID
- https://bugzilla.wikimedia.org/attachment.cgi?id=13452&action=diff x_refsource_MISC
- https://bugzilla.wikimedia.org/show_bug.cgi?id=55332 x_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| http://lists.fedoraproject.org/pipermail/package-announce/2013-December/122998.html | vendor-advisoryx_refsource_FEDORA | |
| http://lists.fedoraproject.org/pipermail/package-announce/2013-December/123011.html | vendor-advisoryx_refsource_FEDORA | |
| http://lists.wikimedia.org/pipermail/mediawiki-announce/2013-November/000135.html | mailing-listx_refsource_MLIST | |
| http://secunia.com/advisories/57472 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.debian.org/security/2014/dsa-2891 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/63761 | vdb-entryx_refsource_BID | |
| https://bugzilla.wikimedia.org/attachment.cgi?id=13452&action=diff | x_refsource_MISC | |
| https://bugzilla.wikimedia.org/show_bug.cgi?id=55332 | x_refsource_CONFIRM |
Change history (0)
No recorded changes yet.