CVE-2026-2736

MEDIUM

Reflected Cross-Site Scripting (XSS) vulnerability in Alkacon's OpenCms

Title source: CVE List
STIX 2.1 vulnerability

Record summary

CVE-2026-2736 has a selected CVSS score of 5.1 (medium).

Description

Reflected Cross-site Scripting (XSS) in Alkacon's OpenCms v18.0, which allows an attacker to execute JavaScript code in the victim's browser by sending the victim a malicious URL containing the ‘q’ parameter in ‘/search/index.html’. This vulnerability can be exploited to steal sensitive user information such as session cookies, or to perform actions while impersonating the user.

Description source: CVE List

Exploitation context

CISA SSVC decision

ExploitationNone
AutomatableNo
Technical impactPartial

CISA Coordinator · SSVC 2.0.3 · Evaluated Feb 20, 2026 · Source: CVE List

Affected products and versions

1
ProductSourceVersion range

OpenCms

Browse Alkacon / OpenCms

Default status: unaffected

CVE List18.0affected

References

2