Have you found a vulnerability in a WordPress plugin or theme? Report vulnerabilities in WordPress plugins and themes through our bug bounty program and earn a bounty on all in-scope submissions, while we handle the responsible disclosure process on your behalf.

WordPress Core 4.7.0-6.3.1 - Denial of Service via Cache Poisoning

Wordfence Intelligence > Vulnerability Database > WordPress Core 4.7.0-6.3.1 - Denial of Service via Cache Poisoning

5.3

Improper Preservation of Consistency Between Independent Representations of Shared State

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

CVSS	5.3 (Medium)
Publicly Published	October 12, 2023
Last Updated	February 6, 2024
Researchers	s5s raouf_maklouf

Description

WordPress Core is vulnerable to Denial of Service via Cache Poisoning in versions between 4.7.0 and 6.3.1. In cases where the X-HTTP-Method-Override header was sent in a request to a REST endpoint and the endpoint returned a 4xx error, the error could be cached, resulting in denial of service.

References

core.trac.wordpress.org

1 affected software package

WordPress

Software Type	Core
Patched?	Yes
Remediation	Update to one of the following versions, or a newer patched version: 4.7.27, 4.8.23, 4.9.24, 5.0.20, 5.1.17, 5.2.19, 5.3.16, 5.4.14, 5.5.13, 5.6.12, 5.7.10, 5.8.8, 5.9.8, 6.0.6, 6.1.4, 6.2.3, 6.3.2
Affected Versions	5.7 - 5.7.9 5.8 - 5.8.7 5.9 - 5.9.7 6.0 - 6.0.5 Expand to see 13 more affected version ranges. 6.1 - 6.1.3 6.2 - 6.2.2 6.3 - 6.3.1 4.7 - 4.7.26 4.8 - 4.8.22 4.9 - 4.9.23 5.0 - 5.0.19 5.1 - 5.1.16 5.2 - 5.2.18 5.3 - 5.3.15 5.4 - 5.4.13 5.5 - 5.5.12 5.6 - 5.6.11
Patched Versions	4.7.27 4.8.23 4.9.24 5.0.20 Expand to see 13 more patched versions. 5.1.17 5.2.19 5.3.16 5.4.14 5.5.13 5.6.12 5.7.10 5.8.8 5.9.8 6.0.6 6.1.4 6.2.3 6.3.2

This record contains material that is subject to copyright.

License: Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy. Read more.

Have information to add, or spot any errors? Contact us at wfi-support@wordfence.com so we can make any appropriate adjustments.

Did you know Wordfence Intelligence provides free personal and commercial API access to our comprehensive WordPress vulnerability database, along with a free webhook integration to stay on top of the latest vulnerabilities added and updated in the database? Get started today!

Learn more

Want to get notified of the latest vulnerabilities that may affect your WordPress site?
Install Wordfence on your site today to get notified immediately if your site is affected by a vulnerability that has been added to our database.

Get Wordfence

The Wordfence Intelligence WordPress vulnerability database is completely free to access and query via API. Please review the documentation on how to access and consume the vulnerability data via API.

Documentation