The User::matchEditToken function in includes/User.php in MediaWiki before 1.23.12, 1.24.x before 1.24.5, 1.25.x before 1.25.4, and 1.26.x before 1.26.1 does not perform token comparison in constant time before determining if a debugging message should be logged, which allows remote attackers to guess the edit token and bypass CSRF protection via a timing attack, a different vulnerability than CVE-2015-8623
Published Mar 23, 2017
8.8
HIGHCVSS 3.0
EPSS 0.75%
Description
The User::matchEditToken function in includes/User.php in MediaWiki before 1.23.12, 1.24.x before 1.24.5, 1.25.x before 1.25.4, and 1.26.x before 1.26.1 does not perform token comparison in constant time before determining if a debugging message should be logged, which allows remote attackers to guess the edit token and bypass CSRF protection via a timing attack, a different vulnerability than CVE-2015-8623.
Affected products
No data.
- ≤ 1.23.11
- 1.24.0
- 1.24.1
- 1.24.2
- 1.24.3
- 1.24.4
- 1.25.0
- 1.25.1
- 1.25.2
- 1.25.3
- 1.26.0
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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.75% (0.00746) | 53.14th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.75% (0.00746) | 49.83th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.12% (0.00116) | 27.96th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.23% (0.00232) | 62.21th | v3 (v2023.03.01) |
| Jun 20, 2024 | 0.23% (0.00232) | 61.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.23% (0.00232) | 59.52th | 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.openwall.com/lists/oss-security/2015/12/21/8 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2015/12/23/7 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.html mailing-listx_refsource_MLISTPatchRelease NotesVendor Advisory
- https://phabricator.wikimedia.org/T119309 x_refsource_CONFIRMPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2015/12/21/8 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| http://www.openwall.com/lists/oss-security/2015/12/23/7 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.html | mailing-listx_refsource_MLISTPatchRelease NotesVendor Advisory | |
| https://phabricator.wikimedia.org/T119309 | x_refsource_CONFIRMPatchThird Party Advisory |
Change history (0)
No recorded changes yet.