HIGH
The wp_http_validate_url function in wp-includes/http.php in WordPress before 4.4.2 allows remote attackers to conduct server-side request forgery (SSRF) attacks via a zero value in the first octet of an IPv4 address in the u parameter to wp-admin/press-this.php
Published May 22, 2016
8.6
HIGHCVSS 3.0
EPSS 7.87%
Description
The wp_http_validate_url function in wp-includes/http.php in WordPress before 4.4.2 allows remote attackers to conduct server-side request forgery (SSRF) attacks via a zero value in the first octet of an IPv4 address in the u parameter to wp-admin/press-this.php.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
8.6 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality Impact None
Integrity Impact High
Availability Impact None
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
7.87% 0.07872
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.07872
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 (41 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.87% (0.07872) | 94.53th | v5 (v2026.06.15) |
| Aug 2, 2026 | 7.87% (0.07872) | 94.11th | v5 (v2026.06.15) |
| Jun 15, 2026 | 9.28% (0.09275) | 94.70th | v5 (v2026.06.15) |
| Mar 4, 2026 | 5.17% (0.05172) | 89.71th | v4 (v2025.03.14) |
| Mar 1, 2026 | 13.02% (0.13019) | 93.98th | v4 (v2025.03.14) |
| Feb 4, 2026 | 5.17% (0.05172) | 89.63th | v4 (v2025.03.14) |
| Feb 1, 2026 | 13.02% (0.13019) | 93.93th | v4 (v2025.03.14) |
| Jan 4, 2026 | 5.17% (0.05172) | 89.56th | v4 (v2025.03.14) |
| Jan 1, 2026 | 13.02% (0.13019) | 93.89th | v4 (v2025.03.14) |
| Dec 28, 2025 | 5.17% (0.05172) | 89.55th | v4 (v2025.03.14) |
| Dec 27, 2025 | 4.13% (0.04132) | 88.33th | v4 (v2025.03.14) |
| Dec 4, 2025 | 5.17% (0.05172) | 89.50th | v4 (v2025.03.14) |
| Dec 1, 2025 | 13.02% (0.13019) | 93.86th | v4 (v2025.03.14) |
| Nov 4, 2025 | 5.17% (0.05172) | 89.41th | v4 (v2025.03.14) |
| Nov 1, 2025 | 13.02% (0.13019) | 93.82th | v4 (v2025.03.14) |
| Oct 28, 2025 | 5.17% (0.05172) | 89.40th | v4 (v2025.03.14) |
| Oct 27, 2025 | 4.13% (0.04132) | 88.17th | v4 (v2025.03.14) |
| Oct 4, 2025 | 5.17% (0.05172) | 89.45th | v4 (v2025.03.14) |
| Oct 1, 2025 | 13.02% (0.13019) | 93.86th | v4 (v2025.03.14) |
| Sep 4, 2025 | 4.13% (0.04132) | 88.20th | v4 (v2025.03.14) |
| Sep 1, 2025 | 11.52% (0.11520) | 93.40th | v4 (v2025.03.14) |
| Aug 4, 2025 | 4.13% (0.04132) | 88.20th | v4 (v2025.03.14) |
| Aug 1, 2025 | 11.52% (0.11520) | 93.38th | v4 (v2025.03.14) |
| Jul 30, 2025 | 4.13% (0.04132) | 88.19th | v4 (v2025.03.14) |
| Jul 4, 2025 | 5.17% (0.05172) | 89.44th | v4 (v2025.03.14) |
| Jul 1, 2025 | 13.02% (0.13019) | 93.79th | v4 (v2025.03.14) |
| Jun 4, 2025 | 5.17% (0.05172) | 89.38th | v4 (v2025.03.14) |
| Jun 1, 2025 | 13.02% (0.13019) | 93.73th | v4 (v2025.03.14) |
| May 4, 2025 | 5.17% (0.05172) | 89.32th | v4 (v2025.03.14) |
| May 1, 2025 | 13.02% (0.13019) | 93.71th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.17% (0.05172) | 88.92th | v4 (v2025.03.14) |
| Mar 29, 2025 | 47.54% (0.47540) | 96.64th | v4 (v2025.03.14) |
| Mar 24, 2025 | 5.17% (0.05172) | 88.91th | v4 (v2025.03.14) |
| Mar 23, 2025 | 24.94% (0.24941) | 95.51th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.17% (0.05172) | 89.16th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.32% (0.01323) | 86.55th | v3 (v2023.03.01) |
| Jan 7, 2024 | 1.32% (0.01323) | 84.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.33% (0.01330) | 83.92th | 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 (0)
No CWE recorded.
References (9)
- http://www.debian.org/security/2016/dsa-3472 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/82454 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1034933 vdb-entryx_refsource_SECTRACK
- https://codex.wordpress.org/Version_4.4.2 x_refsource_CONFIRMPatch
- https://core.trac.wordpress.org/changeset/36435 x_refsource_CONFIRM
- https://hackerone.com/reports/110801 x_refsource_MISCExploit
- https://news.ycombinator.com/item?id=20433070 x_refsource_MISC
- https://wordpress.org/news/2016/02/wordpress-4-4-2-security-and-maintenance-release/ x_refsource_CONFIRMPatchVendor Advisory
- https://wpvulndb.com/vulnerabilities/8376 x_refsource_MISC
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2016/dsa-3472 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/82454 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1034933 | vdb-entryx_refsource_SECTRACK | |
| https://codex.wordpress.org/Version_4.4.2 | x_refsource_CONFIRMPatch | |
| https://core.trac.wordpress.org/changeset/36435 | x_refsource_CONFIRM | |
| https://hackerone.com/reports/110801 | x_refsource_MISCExploit | |
| https://news.ycombinator.com/item?id=20433070 | x_refsource_MISC | |
| https://wordpress.org/news/2016/02/wordpress-4-4-2-security-and-maintenance-release/ | x_refsource_CONFIRMPatchVendor Advisory | |
| https://wpvulndb.com/vulnerabilities/8376 | x_refsource_MISC |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner debian
Published May 22, 2016
Updated Aug 5, 2024
Reserved Feb 4, 2016
Link CVE-2016-2222
CISA Vulnrichment
Updated n/a