CVE-2023-6379

Cross-site Scripting in Alkacon Software OpenCms

MEDIUM

6.1

CVSS Score

Published: December 13, 2023 at 10:52 AM UTC

Updated: June 17, 2026 at 06:50 AM UTC

1 product affected across 1 vendorOpenCMS

Using Open CMS by Alkacon?

Get instant alerts when new vulnerabilities affect Open CMS - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

MEDIUM6.1

Exploit prediction

EPSS 2%

SSVC

No known exploit

Description

Cross-site scripting (XSS) vulnerability in Alkacon Software Open CMS, affecting versions 14 and 15 of the 'Mercury' template. This vulnerability could allow a remote attacker to send a specially crafted JavaScript payload to a victim and partially take control of their browsing session.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

OpenCMS · Alkacon

95%

14.0.0 ≤ v < 16.0.014 15

Affected range stops below 16.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Third Party Advisory

Source: [email protected]

https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-alkacon-software-opencms

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-79

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card