CVE-2016-4029
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining an intranet address, which allows remote attackers to bypass an intended SSRF protection mechanism via a crafted address.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.96%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining an intranet address, which allows remote attackers to bypass an intended SSRF protection mechanism via a crafted address.
- CVSS 3.1
- 8.6 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
- EPSS
- 3.96% probability · 90th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Affected
- wordpress/wordpress · debian/debian linux
- Source
- cve@mitre.org
EPSS 4.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://codex.wordpress.org/Version_4.5Release Notes
- http://www.debian.org/security/2016/dsa-3681Mailing List
- http://www.securitytracker.com/id/1036594Broken Link, Third Party Advisory, VDB Entry
- https://core.trac.wordpress.org/query?status=closed&milestone=4.5Patch
- https://wpvulndb.com/vulnerabilities/8473Broken Link
- http://codex.wordpress.org/Version_4.5Release Notes
- http://www.debian.org/security/2016/dsa-3681Mailing List
- http://www.securitytracker.com/id/1036594Broken Link, Third Party Advisory, VDB Entry
- https://core.trac.wordpress.org/query?status=closed&milestone=4.5Patch
- https://wpvulndb.com/vulnerabilities/8473Broken Link
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.