CVE-2025-27822

An issue was discovered in the Masquerade module before 1.x-1.0.1 for Backdrop CMS. It allows people to temporarily switch to another user account. The module provides a "Masquerade as admin" permission to restrict people who can masquerade from switching to an account with administrative...

CVE-2025-27826

An XSS issue was discovered in the Bootstrap Lite theme before 1.x-1.4.5 for Backdrop CMS. It doesn't sufficiently sanitize certain class names...

CVE-2025-27824

An XSS issue was discovered in the Link iframe formatter module before 1.x-1.1.1 for Backdrop CMS. It doesn't sufficiently sanitize input before displaying results to the screen. This vulnerability is mitigated by the fact that an attacker must have the ability to create content containing an...

CVE-2025-27824: Improper Neutralization of Input During Web Page Generation

An XSS issue was discovered in the Link iframe formatter module before 1.x-1.1.1 for Backdrop CMS. It doesn't sufficiently sanitize input before displaying results to the screen. This vulnerability is mitigated by the fact that an attacker must have the ability to create content containing an...

PT-2025-10130

Name of the Vulnerable Software and Affected Versions Backdrop CMS Bootstrap Lite theme versions prior to 1.x-1.4.5 Description A cross-site scripting XSS issue was found due to insufficient sanitization of certain class names. Recommendations For versions prior to 1.x-1.4.5, update to version...

CVE-2025-27825

CVE-2025-27825 affects Backdrop CMS using the Bootstrap 5 Lite theme prior to 1.x-1.0.3. Root cause: insufficient sanitization of certain class names in the theme, enabling an XSS vulnerability. Public exploitation details are not provided in the connected documents. No remediation details are ex...

CVE-2025-25063

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, ...

CVE-2025-25062

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...

Backdrop CMS 1.29.2 Cross Site Scripting / Cross Site Request Forgery

Backdrop CMS version 1.29.2 remote exploit that chains a persistent cross site scripting vulnerability with a cross site request forgery payload to achieve privilege escalation form the role of Editor to Administrator...

Cross-site Scripting (XSS)

Backdrop CMS is vulnerable to Cross-site Scripting XSS. The vulnerability is due to improper validation of uploaded SVG images due to insufficient filtering of dangerous SVG tags, allowing an attacker to execute scripts in the browser when an SVG image is viewed directly via its URL...

Cross-site Scripting (XSS)

Backdrop CMS is vulnerable to Cross-site Scripting XSS. The vulnerability is due to improper content isolation due to insufficient sanitization of long text content when using the CKEditor 5 rich text editor, allowing an attacker to inject malicious HTML and JavaScript that executes when an...

Cross-site Scripting (XSS)

Overview backdrop/backdrop is a CMS that helps you build websites for businesses and non-profits. Affected versions of this package are vulnerable to Cross-site Scripting XSS due to insufficient validation of uploaded SVG images. A user with SVG upload privileges who convinces another user to...

CVE-2025-25062

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...

CVE-2025-25063

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, ...

CVE-2025-25062

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...

CVE-2025-25062

CVE-2025-25062 is an XSS vulnerability in Backdrop CMS (CKEditor 5 module) affecting 1.28.x prior to 1.28.5 and 1.29.x prior to 1.29.3. The issue arises from insufficient isolation of long text content, enabling crafted HTML/JS to execute when an administrator edits content. Exploitation prospect...

CVE-2025-25063

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, ...

CVE-2025-25063

Backdrop CMS has an XSS vulnerability (CVE-2025-25063) in versions 1.28.x before 1.28.5 and 1.29.x before 1.29.3 due to insufficient validation of uploaded SVG images. Crafted SVGs could execute scripting when viewed directly via their URL, though sanitization occurs by embedding all uploaded SVG...

CVE-2025-25062

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...

PT-2025-5615 · Unknown · Ckeditor 5 +1

Name of the Vulnerable Software and Affected Versions: Backdrop CMS versions 1.28.x through 1.28.4 Backdrop CMS versions 1.29.x through 1.29.2 Description: A cross-site scripting XSS issue was discovered in Backdrop CMS when using the CKEditor 5 rich text editor. The issue arises because the syst...