CVE-2021-3312

PoC —

CVSS 3.1

6.5 medium

EPSS

1%p69

Published

Oct 8, 2021 (Oct 8, 2021)

Modified

Jun 17, 2026

Description

An XML external entity (XXE) vulnerability in Alkacon OpenCms 11.0, 11.0.1 and 11.0.2 allows remote authenticated users with edit privileges to exfiltrate files from the server's file system by uploading a crafted SVG document.

Vendors: alkacon
Products: opencms
Weakness: CWE-611
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (1.3%)

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