MEDIUM
The make_clickable function in wp-includes/formatting.php in WordPress before 3.1.1 does not properly check URLs before passing them to the PCRE library, which allows remote attackers to cause a denial of service (crash) via a comment with a crafted URL that triggers many recursive calls
Published Jun 27, 2012
5.0
MEDIUMCVSS 2.0
EPSS 3.16%
Description
The make_clickable function in wp-includes/formatting.php in WordPress before 3.1.1 does not properly check URLs before passing them to the PCRE library, which allows remote attackers to cause a denial of service (crash) via a comment with a crafted URL that triggers many recursive calls.
Affected products
No data.
OR
- ≤ 3.1
- 0.71
- 1.0
- 1.0.1
- 1.0.2
- 1.1.1
- 1.2
- 1.2.1
- 1.2.2
- 1.2.3
- 1.2.4
- 1.2.5
- 1.2.5
- 1.3
- 1.3.2
- 1.3.3
- 1.5
- 1.5.1
- 1.5.1.1
- 1.5.1.2
- 1.5.1.3
- 1.5.2
- 2.0
- 2.0.1
- 2.0.2
- 2.0.4
- 2.0.5
- 2.0.6
- 2.0.7
- 2.0.8
- 2.0.9
- 2.0.10
- 2.0.11
- 2.1
- 2.1.1
- 2.1.2
- 2.1.3
- 2.2
- 2.2.1
- 2.2.2
- 2.2.3
- 2.3
- 2.3.1
- 2.3.2
- 2.3.3
- 2.5
- 2.5.1
- 2.6
- 2.6.1
- 2.6.2
- 2.6.3
- 2.6.5
- 2.7
- 2.7.1
- 2.8
- 2.8.1
- 2.8.2
- 2.8.3
- 2.8.4
- 2.8.4
- 2.8.5
- 2.8.5.1
- 2.8.5.2
- 2.8.6
- 2.9
- 2.9.1
- 2.9.1.1
- 2.9.2
- 3.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.0.4
- 3.0.5
- 3.0.6
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.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.16% 0.03155
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03155
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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.16% (0.03155) | 87.51th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.16% (0.03155) | 86.25th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.43% (0.02427) | 83.70th | v4 (v2025.03.14) |
| Mar 29, 2025 | 29.54% (0.29543) | 94.65th | v4 (v2025.03.14) |
| Mar 24, 2025 | 2.43% (0.02427) | 83.65th | v4 (v2025.03.14) |
| Mar 23, 2025 | 15.53% (0.15525) | 93.80th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.43% (0.02427) | 84.04th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.55% (0.01548) | 87.67th | v3 (v2023.03.01) |
| May 24, 2024 | 1.18% (0.01181) | 85.01th | v3 (v2023.03.01) |
| May 10, 2024 | 0.99% (0.00994) | 83.48th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.84% (0.00842) | 81.90th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.78% (0.00783) | 80.98th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.66% (0.00659) | 78.87th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.55% (0.01548) | 85.07th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
Weaknesses (1)
References (7)
- http://core.trac.wordpress.org/ticket/16892 x_refsource_CONFIRM
- http://secunia.com/advisories/44038 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/49138 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://wordpress.org/news/2011/04/wordpress-3-1-1/ x_refsource_CONFIRM
- http://www.debian.org/security/2012/dsa-2470 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2012/04/19/17 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2012/04/19/6 mailing-listx_refsource_MLIST
| Link | Providers | Tags |
|---|---|---|
| http://core.trac.wordpress.org/ticket/16892 | x_refsource_CONFIRM | |
| http://secunia.com/advisories/44038 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/49138 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://wordpress.org/news/2011/04/wordpress-3-1-1/ | x_refsource_CONFIRM | |
| http://www.debian.org/security/2012/dsa-2470 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.openwall.com/lists/oss-security/2012/04/19/17 | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2012/04/19/6 | mailing-listx_refsource_MLIST |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Jun 27, 2012
Updated Sep 17, 2024
Reserved Dec 23, 2011
Link CVE-2011-4957
CISA Vulnrichment
Updated n/a