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CVE-2025-25063

Quick assessment

Affected
backdropcms backdrop
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.

Backdrop CMS是Backdrop CMS开源的一个内容管理系统（CMS）。 Backdrop CMS 1.28.5版本之前的1.28.x版本和1.29.3版本之前的1.29.x版本存在安全漏洞，该漏洞源于对上传的SVG图像验证不足，容易受到跨站脚本攻击。

CVSS 4.4 · Medium EPSS 0.20% · P10
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I. Basic Information for CVE-2025-25063

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An XSS issue was discovered in Backdrop CMS 1.28.x before 1.28.5 and 1.29.x before 1.29.3. It does not sufficiently validate uploaded SVG images to ensure they do not contain potentially dangerous SVG tags. SVG images can contain clickable links and executable scripting, and using a crafted SVG, it is possible to execute scripting in the browser when an SVG image is viewed. This issue is mitigated by the attacker needing to be able to upload SVG images, and that Backdrop embeds all uploaded SVG images within <img> tags, which prevents scripting from executing. The SVG must be viewed directly by its URL in order to run any embedded scripting.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/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
Vulnerability Title
Backdrop CMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Backdrop CMS是Backdrop CMS开源的一个内容管理系统（CMS）。 Backdrop CMS 1.28.5版本之前的1.28.x版本和1.29.3版本之前的1.29.x版本存在安全漏洞，该漏洞源于对上传的SVG图像验证不足，容易受到跨站脚本攻击。
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
backdropcms backdrop 1.28.0 ~ 1.28.5 -

II. Public POCs for CVE-2025-25063

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III. Intelligence Information for CVE-2025-25063

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Vendor Advisories for CVE-2025-25063 (1)

IV. Related Vulnerabilities

Same product: backdrop
Same vendor: backdropcms
Same weakness: CWE-79

V. Comments for CVE-2025-25063

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