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CVE-2026-25517— Wagtail has improper permission handling on admin preview endpoints

Quick assessment

Affected
wagtail wagtail
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.

Wagtail是Wagtail开源的一套开源的内容管理系统（CMS）。 Wagtail 6.3.6之前版本、7.0.4之前版本、7.1.3之前版本、7.2.2之前版本和7.3之前版本存在安全漏洞，该漏洞源于预览端点缺少权限检查，可能导致获取任意页面、片段或站点设置的预览渲染。

AI Predicted 6.5 Difficulty: Easy EPSS 0.49% · P41

Possible ATT&CK Techniques 1 AI

T1552.003 · Shell History
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I. Basic Information for CVE-2026-25517

Vulnerability Information
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Vulnerability Title
Wagtail has improper permission handling on admin preview endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
Wagtail is an open source content management system built on Django. Prior to versions 6.3.6, 7.0.4, 7.1.3, 7.2.2, and 7.3, due to a missing permission check on the preview endpoints, a user with access to the Wagtail admin and knowledge of a model's fields can craft a form submission to obtain a preview rendering of any page, snippet or site setting object for which previews are enabled, consisting of any data of the user's choosing. The existing data of the object itself is not exposed, but depending on the nature of the template being rendered, this may expose other database contents that would otherwise only be accessible to users with edit access over the model. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin. This issue has been patched in versions 6.3.6, 7.0.4, 7.1.3, 7.2.2, and 7.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Wagtail 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wagtail是Wagtail开源的一套开源的内容管理系统（CMS）。 Wagtail 6.3.6之前版本、7.0.4之前版本、7.1.3之前版本、7.2.2之前版本和7.3之前版本存在安全漏洞，该漏洞源于预览端点缺少权限检查，可能导致获取任意页面、片段或站点设置的预览渲染。
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
wagtail wagtail < 6.3.6 -

II. Public POCs for CVE-2026-25517

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III. Intelligence Information for CVE-2026-25517

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Patches & Fixes for CVE-2026-25517 (4)

Vendor Advisories for CVE-2026-25517 (1)

IV. Related Vulnerabilities

Same product: wagtail
Same vendor: wagtail
Same weakness: CWE-862

V. Comments for CVE-2026-25517

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