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

Quick assessment

Affected
WP Spell Check WP Spell Check
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WP Spell Check（wp-spell-check）中存在不信任数据反序列化漏洞，可能导致对象注入。该漏洞影响 WP Spell Check 版本从初始版本到 12.1 的所有版本。

CVSS 7.2 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
WP Spell Check WP Spell Check ≤ 12.1 affected
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I. Basic Information for CVE-2026-100506

Vulnerability Information
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Vulnerability Title
WordPress WP Spell Check plugin <= 12.1 - PHP Object Injection vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WP Spell Check WP Spell Check 0 ~ 12.1 -

II. Public POCs for CVE-2026-100506

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III. Intelligence Information for CVE-2026-100506

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Other References for CVE-2026-100506 (1)

IV. Related Vulnerabilities

Same product: WP Spell Check
Same vendor: WP Spell Check
Same weakness: CWE-502

V. Comments for CVE-2026-100506

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