CVE-2026-89145

    Dashboard / Vulnerabilities / CVE-2026-89145

    CVE-2026-89145

    Published: 11 Sept 2026Last Modified: 12 Sept 2026

    Summary: Flextype CMS 0.9.9 through 1.0.0-alpha.3 Stored XSS via Plugin Directory

    Details: Flextype CMS versions 0.9.9 through 1.0.0-alpha.3 fail to HTML-escape plugin directory names in the dependency error page rendered by getValidPluginsDependencies(). Attackers with write access to the plugins directory can create a plugin with HTML characters in its name to execute arbitrary scripts in users' browsers when dependency validation fails.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89145.json, https://nvd.nist.gov/vuln/detail/CVE-2026-89145, https://www.vulncheck.com/advisories/flextype-cms-0.9.9-through-1.0.0-alpha.3-stored-xss-via-plugin-directory, https://github.com/flextype/flextype/issues/597, https://github.com/flextype/flextype, https://github.com/flextype/flextype/blob/aea4ead8c449ea5517ed53b6dcbd28b0a528ad9d/src/flextype/core/Plugins.php#L345

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- a30429fbf157033804430a287cb3c71ec744daef
    Fixed -aea4ead8c449ea5517ed53b6dcbd28b0a528ad9d

    Affected versions

    v1.0.0-alpha.2
    v1.0.0-alpha.1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-89145 | CVE-DB