CVE-2026-27742
MediumCVSS 5.4Exploitation Probability (EPSS)
Low risk4th percentile - higher than 4% of all known CVEs
Summary
Bludit 3.16.2 contains a stored XSS vulnerability in the post content functionality. The application performs client-side sanitation but lacks server-side enforcement. An authenticated user can inject arbitrary JavaScript into post content, which is stored and rendered to other users without proper output encoding.
Risk Assessment
Risk includes session hijacking, credential theft, content manipulation, or other actions within the victim's privileges. An attacker can exploit this to target other users of the system.
Recommendation
Update Bludit to the latest version that includes a fix for this vulnerability. If an update is not possible, implement server-side validation and output encoding for all content fields.
Other vulnerabilities in Bludit
See all- CVE-2026-72576Medium
A stored cross-site scripting (XSS) vulnerability in Bludit 4.0.0-beta allows a low-privileged authenticated user (Author role) to inject arbitrary JavaScript by uploading a crafted SVG file as the site logo.
- CVE-2026-46657High
Bludit prior to version 3.22.0 has a vulnerability in the user management logic that allows deactivated accounts to maintain access via persistent authentication tokens. When an administrator disables a user account, the application fails to invalidate or clear the associated tokenAuth and tokenRemember fields in the JSON database. Consequently, any user with a pre-existing "Remember Me" cookie can bypass the account disablement and maintain a valid authenticated state.
- CVE-2026-46656High
Bludit prior to version 3.22.0 has a Broken Access Control flaw where active sessions remain valid even after the user account is deleted from the database. This allows revoked users to maintain unauthorized access.
- CVE-2026-27741Medium
Bludit 3.16.1 has a CSRF vulnerability in the /admin/uninstall-plugin/ and /admin/install-theme/ endpoints. Lack of CSRF tokens or request origin validation allows an attacker to trick an authenticated admin into performing unauthorized actions.
- CVE-2020-19228High
An issue was found in Bludit v3.13.0 where an unsafe implementation of the backup plugin allows attackers to upload arbitrary files to the server.
Original NVD description (English source)
Bludit version 3.16.2 contains a stored cross-site scripting (XSS) vulnerability in the post content functionality. The application performs client-side sanitation of content input but does not enforce equivalent sanitation on the server side. An authenticated user can inject arbitrary JavaScript into the content field of a post, which is stored and later rendered to other users without proper output encoding. When viewed, the injected script executes in the context of the victim’s browser, allowing session hijacking, credential theft, content manipulation, or other actions within the user’s privileges.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS