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CVE-2026-110290— WebberZone Top 10 <= 4.5.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'other_attributes' Block Attribute

Quick assessment

Affected
ajay WebberZone Top 10 — Popular Posts
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 插件 WebberZone Top 10 — Popular Posts 在所有 4.5.2 及更早版本中，存在存储型跨站脚本（Stored XSS）漏洞。该漏洞源于对 （用于注入 ）和未声明的 参数缺乏充分的输入清理与输出转义。具备贡献者（Contributor）及以上权限的已认证攻击者，可利用此漏洞在页面中注入任意 Web 脚本；当用户访问被注入的页面时，这些脚本将被执行。利用该漏洞需通过区块（block）JSON 将未声明的 标志设置为 ，从而触发存在漏洞的代码路径，将攻击者控制的 值拼接

CVSS 6.4 · Medium EPSS 0.21% · P10

Affected Version Matrix 1

VendorProduct Version RangeStatus
ajay WebberZone Top 10 — Popular Posts ≤ 4.5.2 affected
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I. Basic Information for CVE-2026-110290

Vulnerability Information
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Vulnerability Title
WebberZone Top 10 <= 4.5.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'other_attributes' Block Attribute
Source: CVE Program / CVE List V5
Vulnerability Description
The WebberZone Top 10 — Popular Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'other_attributes (parsed to inject instance_id) + undeclared is_widget' parameter in all versions up to, and including, 4.5.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit requires setting the undeclared is_widget flag to '1' via block JSON, which activates the vulnerable code path that concatenates the attacker-controlled instance_id value into an unescaped HTML class attribute.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/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
ajay WebberZone Top 10 — Popular Posts 0 ~ 4.5.2 -

II. Public POCs for CVE-2026-110290

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III. Intelligence Information for CVE-2026-110290

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Patches & Fixes for CVE-2026-110290 (1)

Vendor Advisories for CVE-2026-110290 (1)

Vendor Pages for CVE-2026-110290 (2)

Other References for CVE-2026-110290 (1)

IV. Related Vulnerabilities

Same product: WebberZone Top 10 — Popular Posts
Same vendor: ajay
Same weakness: CWE-79

V. Comments for CVE-2026-110290

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