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CVE-2026-70376— Pluck CMS - CSRF via Spoofable Missing-Referer Bypass Leads to Stored XSS and RCE

Quick assessment

Affected
pluck-cms Pluck CMS
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Pluck-cms Pluck是Pluck-cms团队开源的一款一套PHP开发的内容管理系统。 Pluck-cms pluck 4.7.21之前版本存在跨站请求伪造漏洞，该漏洞源于管理面板仅依赖Referer头比较进行跨站请求伪造保护，且缺少每个请求的反CSRF令牌，可能导致攻击者强制已认证管理员提交伪造操作，造成存储型跨站脚本和远程代码执行。

CVSS 9.6 · Critical EPSS 0.20% · P10

Affected Version Matrix 1

VendorProduct Version RangeStatus
pluck-cms Pluck CMS ≤ 4.7.21 affected
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I. Basic Information for CVE-2026-70376

Vulnerability Information
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Vulnerability Title
Pluck CMS - CSRF via Spoofable Missing-Referer Bypass Leads to Stored XSS and RCE
Source: CVE Program / CVE List V5
Vulnerability Description
Pluck CMS's admin panel relies solely on a Referer-header comparison (requestedByTheSameDomain in data/inc/functions.admin.php, gating every admin.php action) for CSRF protection, with no per-request anti-CSRF token anywhere in the admin area.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Pluck-cms pluck 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pluck-cms Pluck是Pluck-cms团队开源的一款一套PHP开发的内容管理系统。 Pluck-cms pluck 4.7.21之前版本存在跨站请求伪造漏洞，该漏洞源于管理面板仅依赖Referer头比较进行跨站请求伪造保护，且缺少每个请求的反CSRF令牌，可能导致攻击者强制已认证管理员提交伪造操作，造成存储型跨站脚本和远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
pluck-cms Pluck CMS 0 ~ 4.7.21 -

II. Public POCs for CVE-2026-70376

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 5634 chars
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III. Intelligence Information for CVE-2026-70376

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Other References for CVE-2026-70376 (1)

IV. Related Vulnerabilities

Same product: Pluck CMS
Same vendor: pluck-cms
Same weakness: CWE-352