CVE-2025-25062
Last modified
CVE-2025-25062 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. 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. EPSS estimates a 1.64% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Backdropcms | Backdrop Cms | >= 1.28.0, < 1.28.5 |
| Backdropcms | Backdrop Cms | >= 1.29.0, < 1.29.3 |
References
- https://backdropcms.org/security/backdrop-sa-core-2025-001Vendor Advisory
- https://www.getastra.com/blog/vulnerability/cve-2025-25062stored-cross-site-scripting-xss-in-backdrop-cms-v1-28-2/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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