Seraphinite Accelerator <= 2.29.23 — Authenticated (Subscriber+) Full Admin Area Denial of Service
CVE-2026-87828Published · Updated Action summary
Affected: ≤2.29.23Update to 2.29.24 or newer
All remediation steps- Severity
- Medium4.3
- CVSS
- 4.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:LWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:NIntegrity- None
A:LAvailability- Low
- Required access
- Unknown
- Exploit prediction (EPSS)
- 0.3% chance in 30 days24th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
Seraphinite Accelerator seraphinite-accelerator
- Affected≤ 2.29.23
- Patched in2.29.24
Update to 2.29.24 or newer.
You are affected if you run ≤ 2.29.23. Version 2.29.24 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Seraphinite Accelerator.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 2.29.24, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Seraphinite Accelerator to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Ángel PS.
The Seraphinite Accelerator plugin for WordPress is vulnerable to Denial of Service in all versions up to, and including, 2.29.23. This is due to a missing capability check on the OnAdminApi_StateSet AJAX handler, allowing low-privileged users to write malformed state values. This makes it possible for authenticated attackers, with subscriber-level access and above, to cause an uncaught error on every admin page load, rendering the entire WordPress admin area inaccessible to all administrators.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Seraphinite Accelerator
All 13| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Unauthenticated Sensitive Information Exposure in Object Cache Directory ≤2.29.24Update to 2.29.25 | CVE-2026-90960 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤2.29.18Update to 2.29.19 | CVE-2026-17532 | |
| Medium4.3 | Authenticated (Subscriber+) Exposure of Sensitive Information to an Unauthorized Actor ≤2.28.14Update to 2.28.15 | CVE-2026-3058 | |
| Medium4.3 | Missing Authorization to Authenticated (Subscriber+) Log Clearing ≤2.28.14Update to 2.28.15 | CVE-2026-3056 | |
| Medium4.3 | Cross-Site Request Forgery to Multiple Administrative Actions ≤2.27.21Update to 2.27.22 | CVE-2025-6059 |
- Medium5.3Unauthenticated Sensitive Information Exposure in Object Cache Directory
≤2.29.24Update to 2.29.25
- Medium6.1Reflected Cross-Site Scripting
≤2.29.18Update to 2.29.19
- Medium4.3Authenticated (Subscriber+) Exposure of Sensitive Information to an Unauthorized Actor
≤2.28.14Update to 2.28.15
- Medium4.3Missing Authorization to Authenticated (Subscriber+) Log Clearing
≤2.28.14Update to 2.28.15
- Medium4.3Cross-Site Request Forgery to Multiple Administrative Actions
≤2.27.21Update to 2.27.22
Timeline
CVE published
Severity medium, CVSS 4.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.