MEDIUM
includes/User.php in MediaWiki before 1.16.5, when wgBlockDisablesLogin is enabled, does not clear certain cached data after verification of an auth token fails, which allows remote attackers to bypass authentication by creating crafted wikiUserID and wikiUserName cookies, or by leveraging an unattended workstation
Published May 23, 2011
5.8
MEDIUMCVSS 2.0
EPSS 2.23%
Description
includes/User.php in MediaWiki before 1.16.5, when wgBlockDisablesLogin is enabled, does not clear certain cached data after verification of an auth token fails, which allows remote attackers to bypass authentication by creating crafted wikiUserID and wikiUserName cookies, or by leveraging an unattended workstation.
Affected products
No data.
OR
- ≤ 1.16.4
- 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
- 1.16.3
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.
5.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.23% 0.02232
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02232
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 | 2.23% (0.02232) | 82.14th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.23% (0.02232) | 80.40th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.30% (0.00298) | 51.03th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.78% (0.01784) | 88.56th | v3 (v2023.03.01) |
| Jun 14, 2024 | 1.78% (0.01784) | 88.13th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.78% (0.01784) | 86.13th | 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) |
Weaknesses (1)
References (8)
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060435.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060496.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060507.html vendor-advisoryx_refsource_FEDORA
- http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-May/000098.html mailing-listx_refsource_MLISTPatch
- http://secunia.com/advisories/44684 third-party-advisoryx_refsource_SECUNIA
- http://www.securityfocus.com/bid/47722 vdb-entryx_refsource_BID
- https://bugzilla.redhat.com/show_bug.cgi?id=702512 x_refsource_CONFIRMPatch
- https://bugzilla.wikimedia.org/show_bug.cgi?id=28639 x_refsource_CONFIRMPatch
| Link | Providers | Tags |
|---|---|---|
| http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060435.html | vendor-advisoryx_refsource_FEDORA | |
| http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060496.html | vendor-advisoryx_refsource_FEDORA | |
| http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060507.html | vendor-advisoryx_refsource_FEDORA | |
| http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-May/000098.html | mailing-listx_refsource_MLISTPatch | |
| http://secunia.com/advisories/44684 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.securityfocus.com/bid/47722 | vdb-entryx_refsource_BID | |
| https://bugzilla.redhat.com/show_bug.cgi?id=702512 | x_refsource_CONFIRMPatch | |
| https://bugzilla.wikimedia.org/show_bug.cgi?id=28639 | x_refsource_CONFIRMPatch |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published May 23, 2011
Updated Aug 6, 2024
Reserved Apr 19, 2011
Link CVE-2011-1766
CISA Vulnrichment
Updated n/a