n 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.
| Link | Resource |
|---|---|
| https://backdropcms.org/security/backdrop-sa-core-2025-001 | Vendor Advisory |
| https://medium.com/@rudranshsinghrajpurohit/cve-2025-25062-stored-cross-site-scripting-xss-in-backdrop-cms-5073df76612b | Third Party Advisory Exploit |
| https://www.getastra.com/blog/vulnerability/cve-2025-25062stored-cross-site-scripting-xss-in-backdrop-cms-v1-28-2/ | Third Party Advisory Exploit |
Configuration 1 (hide)
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23 Jan 2026, 18:46
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| First Time |
Backdropcms
Backdropcms backdrop Cms |
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| CPE | cpe:2.3:a:backdropcms:backdrop_cms:*:*:*:*:*:*:*:* | |
| References | () https://backdropcms.org/security/backdrop-sa-core-2025-001 - Vendor Advisory | |
| References | () https://medium.com/@rudranshsinghrajpurohit/cve-2025-25062-stored-cross-site-scripting-xss-in-backdrop-cms-5073df76612b - Third Party Advisory, Exploit | |
| References | () https://www.getastra.com/blog/vulnerability/cve-2025-25062stored-cross-site-scripting-xss-in-backdrop-cms-v1-28-2/ - Third Party Advisory, Exploit |
06 May 2025, 18:15
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| References |
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| Summary |
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03 Feb 2025, 04:15
| Type | Values Removed | Values Added |
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| New CVE |
Published : 2025-02-03 04:15
Updated : 2026-01-23 18:46
NVD link : CVE-2025-25062
Mitre link : CVE-2025-25062
CVE.ORG link : CVE-2025-25062
JSON object : View
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')