MEDIUM
The sanitize_widget_instance function in wp-includes/class-wp-customize-widgets.php in WordPress before 4.2.4 does not use a constant-time comparison for widgets, which allows remote attackers to conduct a timing side-channel attack by measuring the delay before inequality is calculated
Published Nov 9, 2015
5.0
MEDIUMCVSS 2.0
EPSS 7.34%
Description
The sanitize_widget_instance function in wp-includes/class-wp-customize-widgets.php in WordPress before 4.2.4 does not use a constant-time comparison for widgets, which allows remote attackers to conduct a timing side-channel attack by measuring the delay before inequality is calculated.
Affected products
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.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
7.34% 0.07341
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.07341
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 (36 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 7.34% (0.07341) | 94.22th | v5 (v2026.06.15) |
| Aug 2, 2026 | 7.09% (0.07087) | 93.58th | v5 (v2026.06.15) |
| Jun 15, 2026 | 8.35% (0.08354) | 94.22th | v5 (v2026.06.15) |
| Mar 4, 2026 | 9.54% (0.09542) | 92.71th | v4 (v2025.03.14) |
| Mar 1, 2026 | 16.41% (0.16410) | 94.76th | v4 (v2025.03.14) |
| Feb 4, 2026 | 9.54% (0.09542) | 92.64th | v4 (v2025.03.14) |
| Feb 1, 2026 | 16.41% (0.16410) | 94.72th | v4 (v2025.03.14) |
| Jan 4, 2026 | 9.54% (0.09542) | 92.59th | v4 (v2025.03.14) |
| Jan 1, 2026 | 16.41% (0.16410) | 94.70th | v4 (v2025.03.14) |
| Dec 4, 2025 | 9.54% (0.09542) | 92.54th | v4 (v2025.03.14) |
| Dec 1, 2025 | 16.41% (0.16410) | 94.65th | v4 (v2025.03.14) |
| Nov 4, 2025 | 9.54% (0.09542) | 92.49th | v4 (v2025.03.14) |
| Nov 1, 2025 | 16.41% (0.16410) | 94.63th | v4 (v2025.03.14) |
| Oct 4, 2025 | 9.54% (0.09542) | 92.54th | v4 (v2025.03.14) |
| Oct 1, 2025 | 16.41% (0.16410) | 94.66th | v4 (v2025.03.14) |
| Sep 4, 2025 | 10.12% (0.10123) | 92.83th | v4 (v2025.03.14) |
| Sep 1, 2025 | 18.62% (0.18623) | 95.05th | v4 (v2025.03.14) |
| Aug 4, 2025 | 10.12% (0.10123) | 92.78th | v4 (v2025.03.14) |
| Aug 1, 2025 | 18.62% (0.18623) | 95.04th | v4 (v2025.03.14) |
| Jul 4, 2025 | 9.54% (0.09542) | 92.48th | v4 (v2025.03.14) |
| Jul 1, 2025 | 16.41% (0.16410) | 94.60th | v4 (v2025.03.14) |
| Jun 4, 2025 | 9.54% (0.09542) | 92.42th | v4 (v2025.03.14) |
| Jun 1, 2025 | 16.41% (0.16410) | 94.55th | v4 (v2025.03.14) |
| May 4, 2025 | 9.54% (0.09542) | 92.40th | v4 (v2025.03.14) |
| May 1, 2025 | 16.41% (0.16410) | 94.51th | v4 (v2025.03.14) |
| Mar 30, 2025 | 9.54% (0.09542) | 92.10th | v4 (v2025.03.14) |
| Mar 29, 2025 | 34.22% (0.34216) | 95.31th | v4 (v2025.03.14) |
| Mar 24, 2025 | 9.54% (0.09542) | 92.09th | v4 (v2025.03.14) |
| Mar 23, 2025 | 34.22% (0.34216) | 96.49th | v4 (v2025.03.14) |
| Mar 17, 2025 | 9.54% (0.09542) | 92.27th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.73% (0.00726) | 81.32th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.73% (0.00726) | 80.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.73% (0.00726) | 77.67th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.97% (0.01974) | 78.97th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.97% (0.01974) | 77.12th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.97% (0.01974) | 56.20th | v2 (v2022.01.01) |
Weaknesses (1)
References (9)
- http://openwall.com/lists/oss-security/2015/08/04/7 mailing-listx_refsource_MLIST
- http://www.debian.org/security/2015/dsa-3332 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/76160 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1033178 vdb-entryx_refsource_SECTRACK
- https://codex.wordpress.org/Version_4.2.4 x_refsource_CONFIRMPatchVendor Advisory
- https://core.trac.wordpress.org/changeset/33535 x_refsource_CONFIRM
- https://core.trac.wordpress.org/changeset/33536 x_refsource_CONFIRM
- https://wordpress.org/news/2015/08/wordpress-4-2-4-security-and-maintenance-release/ x_refsource_CONFIRMPatchVendor Advisory
- https://wpvulndb.com/vulnerabilities/8130 x_refsource_MISC
| Link | Providers | Tags |
|---|---|---|
| http://openwall.com/lists/oss-security/2015/08/04/7 | mailing-listx_refsource_MLIST | |
| http://www.debian.org/security/2015/dsa-3332 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/76160 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1033178 | vdb-entryx_refsource_SECTRACK | |
| https://codex.wordpress.org/Version_4.2.4 | x_refsource_CONFIRMPatchVendor Advisory | |
| https://core.trac.wordpress.org/changeset/33535 | x_refsource_CONFIRM | |
| https://core.trac.wordpress.org/changeset/33536 | x_refsource_CONFIRM | |
| https://wordpress.org/news/2015/08/wordpress-4-2-4-security-and-maintenance-release/ | x_refsource_CONFIRMPatchVendor Advisory | |
| https://wpvulndb.com/vulnerabilities/8130 | x_refsource_MISC |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Nov 9, 2015
Updated Aug 6, 2024
Reserved Aug 4, 2015
Link CVE-2015-5730
CISA Vulnrichment
Updated n/a