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CVE-2026-107757— Gallery Custom Links <= 2.3.3 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Comment Author Display Name + Comment HTML Comment Body

Quick assessment

Affected
tigroumeow Gallery Custom Links
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 Gallery Custom Links 插件在所有 2.3.3 及以下版本中，由于输入清理和输出转义不充分，存在存储型跨站脚本（Stored Cross-Site Scripting）漏洞。该漏洞可通过“display_name（profile.php）”和“comment（wp-comments-post.php）”参数触发。这使得具有订阅者（subscriber）及以上权限的认证攻击者能够在页面中注入任意 Web 脚本，当其他用户访问被植入恶意脚本的页面时，脚本将被执行。 该漏洞利用需

CVSS 4.9 · Medium EPSS 0.24% · P13

Affected Version Matrix 1

VendorProduct Version RangeStatus
tigroumeow Gallery Custom Links ≤ 2.3.3 affected
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I. Basic Information for CVE-2026-107757

Vulnerability Information
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Vulnerability Title
Gallery Custom Links <= 2.3.3 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Comment Author Display Name + Comment HTML Comment Body
Source: CVE Program / CVE List V5
Vulnerability Description
The Gallery Custom Links plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'display_name (profile.php) + comment (wp-comments-post.php)' parameter in all versions up to, and including, 2.3.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit requires two coordinated inputs from the same authenticated attacker: an HTML comment payload stored in a comment body (preserved verbatim by WordPress comment kses) and a matching simple_html_dom noise key placed in the attacker's display_name (which survives esc_attr() intact), with substitution occurring after both filters have run during the plugin's default-on output-buffering pass over the full rendered page.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/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
tigroumeow Gallery Custom Links 0 ~ 2.3.3 -

II. Public POCs for CVE-2026-107757

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III. Intelligence Information for CVE-2026-107757

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Other References for CVE-2026-107757 (4)

Other References for CVE-2026-107757 (1)

IV. Related Vulnerabilities

Same product: Gallery Custom Links
Same vendor: tigroumeow
Same weakness: CWE-79

V. Comments for CVE-2026-107757

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