CVE-2026-88798
The Really Simple Security WordPress plugin before 9.8.3 does not validate a client-supplied address value before using it as a storage key in one of its own options, allowing unauthenticated attackers to grow that option without bound and to slow the site's handling of missing pages.
- Published Sep 18, 2026
- CVSS 5.3 medium
- 0.4% chance of exploitation in the next 30 days (EPSS)
- A fix is available