Cross-site scripting (XSS) vulnerability in MediaWiki before 1.16.4, when Internet Explorer 6 or earlier is used, allows remote attackers to inject arbitrary web script or HTML via an uploaded file accessed with a dangerous extension such as .html located before a ? (question mark) in a query string, in conjunction with a modified URI path that has a %2E sequence in place of the
Published Apr 27, 2011
4.3
MEDIUMCVSS 2.0
EPSS 1.71%
Description
Cross-site scripting (XSS) vulnerability in MediaWiki before 1.16.4, when Internet Explorer 6 or earlier is used, allows remote attackers to inject arbitrary web script or HTML via an uploaded file accessed with a dangerous extension such as .html located before a ? (question mark) in a query string, in conjunction with a modified URI path that has a %2E sequence in place of the . (dot) character. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-1578.
Affected products
No data.
- ≤ 1.16.3
- 1.1.0
- 1.2.0
- 1.2.1
- 1.2.2
- 1.2.3
- 1.2.4
- 1.2.5
- 1.2.6
- 1.3
- 1.3.0
- 1.3.1
- 1.3.2
- 1.3.3
- 1.3.4
- 1.3.5
- 1.3.6
- 1.3.7
- 1.3.8
- 1.3.9
- 1.3.10
- 1.3.11
- 1.3.12
- 1.3.13
- 1.3.14
- 1.3.15
- 1.4
- 1.4
- 1.4
- 1.4
- 1.4
- 1.4
- 1.4.0
- 1.4.1
- 1.4.2
- 1.4.3
- 1.4.4
- 1.4.5
- 1.4.6
- 1.4.7
- 1.4.8
- 1.4.9
- 1.4.10
- 1.4.11
- 1.4.12
- 1.4.13
- 1.4.14
- 1.5
- 1.5
- 1.5
- 1.5
- 1.5
- 1.5
- 1.5
- 1.5
- 1.5
- 1.5.0
- 1.5.1
- 1.5.2
- 1.5.3
- 1.5.4
- 1.5.5
- 1.5.6
- 1.5.7
- 1.5.8
- 1.6.0
- 1.6.1
- 1.6.2
- 1.6.3
- 1.6.4
- 1.6.5
- 1.6.6
- 1.6.7
- 1.6.8
- 1.6.9
- 1.6.10
- 1.6.11
- 1.6.12
- 1.7.0
- 1.7.1
- 1.7.2
- 1.7.3
- 1.8.0
- 1.8.1
- 1.8.2
- 1.8.3
- 1.8.4
- 1.8.5
- 1.9.0
- 1.9.0
- 1.9.1
- 1.9.2
- 1.9.3
- 1.9.4
- 1.9.5
- 1.9.6
- 1.10.0
- 1.10.0
- 1.10.0
- 1.10.1
- 1.10.2
- 1.10.3
- 1.10.4
- 1.11
- 1.11.0
- 1.11.0
- 1.11.1
- 1.11.2
- 1.12.0
- 1.12.0
- 1.12.1
- 1.12.2
- 1.12.3
- 1.12.4
- 1.13.0
- 1.13.0
- 1.13.0
- 1.13.1
- 1.13.2
- 1.13.3
- 1.13.4
- 1.14.0
- 1.14.0
- 1.14.1
- 1.15.0
- 1.15.0
- 1.15.1
- 1.15.2
- 1.15.3
- 1.15.4
- 1.15.5
- 1.16.0
- 1.16.0
- 1.16.0
- 1.16.1
- 1.16.2
Running on/with
- ≤ 6.0
- 3.0
- 4.0
- 5.0
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.71% (0.01711) | 76.53th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.71% (0.01711) | 74.31th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.20% (0.00201) | 40.22th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.22% (0.00220) | 61.06th | v3 (v2023.03.01) |
| Jun 18, 2024 | 0.22% (0.00220) | 60.29th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.22% (0.00220) | 58.29th | 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://lists.wikimedia.org/pipermail/mediawiki-announce/2011-April/000097.html mailing-listx_refsource_MLISTPatchVendor Advisory
- http://openwall.com/lists/oss-security/2011/04/18/5 mailing-listx_refsource_MLISTPatch
- http://www.debian.org/security/2011/dsa-2366 vendor-advisoryx_refsource_DEBIAN
- https://bugzilla.redhat.com/show_bug.cgi?id=696360 x_refsource_CONFIRMPatch
| Link | Providers | Tags |
|---|---|---|
| http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-April/000097.html | mailing-listx_refsource_MLISTPatchVendor Advisory | |
| http://openwall.com/lists/oss-security/2011/04/18/5 | mailing-listx_refsource_MLISTPatch | |
| http://www.debian.org/security/2011/dsa-2366 | vendor-advisoryx_refsource_DEBIAN | |
| https://bugzilla.redhat.com/show_bug.cgi?id=696360 | x_refsource_CONFIRMPatch |
Change history (0)
No recorded changes yet.