Seraphinite Accelerator Plugin up to 2.29.23 on WordPress AJAX Actions resource consumption

Summaryinfo

A vulnerability was found in Seraphinite Accelerator Plugin up to 2.29.23. It has been classified as problematic. Impacted is an unknown function of the component AJAX Actions. This manipulation causes resource consumption. This vulnerability is tracked as CVE-2026-87828. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in Seraphinite Accelerator Plugin up to 2.29.23. Affected by this vulnerability is an unknown code block of the component AJAX Actions. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect integrity, and availability. The summary by CVE is:

The Seraphinite Accelerator WordPress plugin before 2.29.24 does not perform a capability check on one of its state-update AJAX actions, allowing authenticated users such as subscribers to write a malformed value that causes an uncaught error on every subsequent admin page load, making the entire admin area inaccessible to all administrators (denial of service).

It is possible to read the advisory at wpscan.com. This vulnerability is known as CVE-2026-87828 since 09/09/2026. The exploitation appears to be easy. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 2.29.24 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Vendor

• Seraphinite

Name

• Accelerator Plugin

Version

• 2.29.0
• 2.29.1
• 2.29.2
• 2.29.3
• 2.29.4
• 2.29.5
• 2.29.6
• 2.29.7
• 2.29.8
• 2.29.9
• 2.29.10
• 2.29.11
• 2.29.12
• 2.29.13
• 2.29.14
• 2.29.15
• 2.29.16
• 2.29.17
• 2.29.18
• 2.29.19
• 2.29.20
• 2.29.21
• 2.29.22
• 2.29.23

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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