CVE-2026-2102

MEDIUM 6.1

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

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	wren security
Product	wrensec-commons
Published	Nov 2, 2026
Last Updated	Nov 2, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Wren Security / wrensec-commons

0 < 22.6.2 23.0.0-M1 < 23.0.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/WrenSecurity/wrensec-commons/security/advisories/GHSA-4vhv-49g2-496q github.com: https://github.com/WrenSecurity/wrensec-commons/commit/65bbfd8c63c42e84ff7699aa5b82a22c08a12624 github.com: https://github.com/WrenSecurity/wrensec-commons/commit/5b50c64c14943b6f4d7faf996345e603956bae1d