CVE-2026-100506: WordPress WP Spell Check plugin <= 12.1 - PHP Object Injection vulnerability

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-05 · updated 2026-10-06
Weakness: CWE-502

Description

Deserialization of Untrusted Data vulnerability in WP Spell Check WP Spell Check wp-spell-check allows Object Injection.This issue affects WP Spell Check: from n/a through 12.1.

Affected products

WP Spell Check: through 12.1

References

https://patchstack.com/database/wordpress/plugin/wp-spell-check/vulnerability/wordpress-wp-spell-check-plugin-12-1-php-object-injection-vulnerability?_s_id=cve

Get alerted when CVE-2026-100506 or the next vulnerability affects your stack