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CVE-2026-54260— Wagtail: Denial of service via unbounded filter specs in the image preview

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 wagtail是Wagtail组织的内容管理系统。 Wagtail存在资源管理错误漏洞，该漏洞源于资源管理错误，可能导致经过身份验证的管理员用户通过特制过滤规范触发昂贵的渲染处理，造成服务降级。

CVSS 4.3 · Medium EPSS 0.37% · P30

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 3

VendorProduct Version RangeStatus
wagtail wagtail < 7.0.8 affected
>= 7.1.0, < 7.3.3 affected
>= 7.4.0, < 7.4.2 affected
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I. Basic Information for CVE-2026-54260

Vulnerability Information
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Vulnerability Title
Wagtail: Denial of service via unbounded filter specs in the image preview
Source: CVE Program / CVE List V5
Vulnerability Description
Wagtail is an open source content management system built on Django. In versions prior to 7.0.8, 7.3.3 and 7.4.2, an authenticated admin user can trigger expensive rendition processing with purposefully crafted filter specs resulting in potentially service degradation. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin. This issue has been fixed in versions 7.0.8, 7.3.3, and 7.4.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Wagtail 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wagtail wagtail是Wagtail组织的内容管理系统。 Wagtail存在资源管理错误漏洞，该漏洞源于资源管理错误，可能导致经过身份验证的管理员用户通过特制过滤规范触发昂贵的渲染处理，造成服务降级。
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 < 7.0.8 -

II. Public POCs for CVE-2026-54260

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III. Intelligence Information for CVE-2026-54260

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Vendor Advisories for CVE-2026-54260 (1)

Same Patch Batch · wagtail · 2026-07-01 · 5 CVEs total

CVE-2026-54263 7.3 HIGH Wagtail: Reflected XSS in dynamic image URL generator view
CVE-2026-54261 6.5 MEDIUM Wagtail: Improper permission handling in image preview
CVE-2026-54262 4.3 MEDIUM Wagtail: Pages translations can be created without page permissions when using simple_tran
CVE-2026-54259 4.3 MEDIUM Wagtail: Improper restriction handling on Documents and Images chosen endpoints

IV. Related Vulnerabilities

Same product: wagtail
Same vendor: wagtail
Same weakness: CWE-400

V. Comments for CVE-2026-54260

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