CVE-2026-2102

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    CVE-2026-2102

    Published: 2 Nov 2026Last Modified: 4 Nov 2026

    Summary: XSS in wrensec-commons CREST framework HTTP binding via _mimeType parameter

    Details: wrensec-commons contains a reflected cross-site scripting (XSS) vulnerability in the CREST framework's HTTP binding. The HttpUtils.prepareResponse() method used the _mimeType request parameter to set the Content-Type response header without proper sanitization. By sending a GET request with _mimeType=text/html, an attacker could cause the browser to interpret a CREST JSON response as HTML, enabling execution of arbitrary JavaScript in the victim's browser. The vulnerability is exploitable by tricking a user into visiting a crafted URL targeting any deployed CREST endpoint. The issue is fixed in versions 22.6.2 and 23.0.0.

    References: https://github.com/WrenSecurity/wrensec-commons/, https://repo1.maven.org/maven2, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2102.json, https://github.com/WrenSecurity/wrensec-commons/security/advisories/GHSA-4vhv-49g2-496q, https://nvd.nist.gov/vuln/detail/CVE-2026-2102, https://github.com/WrenSecurity/wrensec-commons/commit/5b50c64c14943b6f4d7faf996345e603956bae1d, https://github.com/WrenSecurity/wrensec-commons/commit/65bbfd8c63c42e84ff7699aa5b82a22c08a12624

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -d2ca0e1ac47020799bbceec7a9759a725bf18642

    Affected versions

    22.6.1
    22.6.0

    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-2026-2102 | CVE-DB