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CVE-2025-25062

CVSS 4.4 · Medium EPSS 28.41% · P97
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I. Basic Information for CVE-2025-25062

Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
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 doesn't sufficiently isolate long text content when the CKEditor 5 rich text editor is used. This allows a potential attacker to craft specialized HTML and JavaScript that may be executed when an administrator attempts to edit a piece of content. This vulnerability is mitigated by the fact that an attacker must have the ability to create long text content (such as through the node or comment forms) and an administrator must edit (not view) the content that contains the malicious content. This problem only exists when using the CKEditor 5 module.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
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，该漏洞源于使用CKEditor 5时未能充分隔离长文本内容，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

VendorProductAffected VersionsCPESubscribe
backdropcmsbackdrop 1.28.0 ~ 1.28.5 -

II. Public POCs for CVE-2025-25062

#POC DescriptionSource LinkShenlong Link
1Backdrop CMS 1.29.2 - Privilege Escalation via Stored XSS + CSRFhttps://github.com/rhburt/CVE-2025-25062POC Details
2An XSS issue was discovered in Backdrop CMS 1.28.x before 1.28.5 and 1.29.x before 1.29.3. It doesn't sufficiently isolate long text content when the CKEditor 5 rich text editor is used. This allows a potential attacker to craft specialized HTML and JavaScript that may be executed when an administrator attempts to edit a piece of content. This vulnerability is mitigated by the fact that an attacker must have the ability to create long text content (such as through the node or comment forms) and an administrator must edit (not view) the content that contains the malicious content. This problem only exists when using the CKEditor 5 module. https://github.com/projectdiscovery/nuclei-templates/blob/main/headless/cves/2025/CVE-2025-25062.yamlPOC Details
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III. Intelligence Information for CVE-2025-25062

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IV. Related Vulnerabilities

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

V. Comments for CVE-2025-25062

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