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CVE-2026-103422— AnyComment <= 0.3.6 - Unauthenticated Stored Cross-Site Scripting via 'email' Parameter

Quick assessment

Affected
ateshabaev AnyComment
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.

WordPress 的 AnyComment 插件在 0.3.6 及更早版本中，存在因 'email' 参数处理不当而导致的存储型跨站脚本漏洞（Stored Cross-Site Scripting, XSS）。该漏洞源于对公开 REST 端点 /wp-json/anycomment/v1/subscribe 的输入 sanitization（清洗）不足，以及在 AnyCommentSubscriptionsTable::column_default() 函数中缺失输出转义处理。当订阅关联的 user_ID 无法解

CVSS 7.2 · High EPSS 0.31% · P22

Affected Version Matrix 1

VendorProduct Version RangeStatus
ateshabaev AnyComment ≤ 0.3.6 affected
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I. Basic Information for CVE-2026-103422

Vulnerability Information
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Vulnerability Title
AnyComment <= 0.3.6 - Unauthenticated Stored Cross-Site Scripting via 'email' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The AnyComment plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'email' parameter in versions up to, and including, 0.3.6. This is due to insufficient input sanitization on the public /wp-json/anycomment/v1/subscribe REST endpoint and missing output escaping in AnyCommentSubscriptionsTable::column_default(), which returns the stored email verbatim into an HTML <td> when the subscription's user_ID does not resolve to an existing WP_User. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator accesses the AnyComment → Subscriptions admin page.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ateshabaev AnyComment 0 ~ 0.3.6 -

II. Public POCs for CVE-2026-103422

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III. Intelligence Information for CVE-2026-103422

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Other References for CVE-2026-103422 (5)

IV. Related Vulnerabilities

Same product: AnyComment
Same weakness: CWE-79

V. Comments for CVE-2026-103422

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