CVE-2016-4029

Name: CVE-2016-4029
Creator: NVD / NIST
Published: 2016-08-07T16:59:00.143+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 4.57%

Last modified Jun 17, 2026

CVE-2016-4029 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. 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.. EPSS estimates a 4.57% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

EPSS Probability

4.57%

90.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Wordpress	Wordpress	< 4.5
Debian	Debian Linux	8.0

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

Timeline

Published: Aug 7, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-4029?

How severe is CVE-2016-4029?

CVE-2016-4029 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 4.57% probability of exploitation in the next 30 days.

How do I fix CVE-2016-4029?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-4029?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST