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CVE-2026-77114— Document Gallery <= 5.1.1 - Unauthenticated Stored Cross-Site Scripting

Quick assessment

Affected
danrossiter Document Gallery
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 Document Gallery 插件存在存储型跨站脚本（Stored Cross-Site Scripting, XSS）漏洞。该漏洞出现在版本 5.1.1 及更早的所有版本中，原因是插件对 'dg_thumber_webhook' 动作请求体中的输入 sanitization（清理）和输出 escaping（转义）不足。这使得未认证的攻击者可以在页面上注入任意 Web 脚本，当用户访问被注入的页面时，这些脚本将执行。利用此漏洞需要启用插件的“高级设置”中的日志记录功能，而该功能仅在 WP

CVSS 7.2 · High EPSS 0.31% · P22

Affected Version Matrix 1

VendorProduct Version RangeStatus
danrossiter Document Gallery ≤ 5.1.1 affected
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I. Basic Information for CVE-2026-77114

Vulnerability Information
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Vulnerability Title
Document Gallery <= 5.1.1 - Unauthenticated Stored Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The Document Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'dg_thumber_webhook' Action Request Body in all versions up to, and including, 5.1.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that logging be enabled in the plugin's Advanced settings, which is only the default state when WP_DEBUG is true; otherwise an administrator must manually enable it.
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
danrossiter Document Gallery 0 ~ 5.1.1 -

II. Public POCs for CVE-2026-77114

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III. Intelligence Information for CVE-2026-77114

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Other References for CVE-2026-77114 (5)

IV. Related Vulnerabilities

Same product: Document Gallery
Same weakness: CWE-79

V. Comments for CVE-2026-77114

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