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Case File

CVE-2021-39175

HIGH · CVSS 8.1 EPSS 0.60% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-30 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.1. It affects Java. Public exploit code or proof-of-concept references have been detected in its references. Exploitation may require the attacker to be authenticated.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-39175
Severity
HIGH
CVSS
8.1
EPSS
0.60%
Java

Original NVD Description

HedgeDoc is a platform to write and share markdown. In versions prior to 1.9.0, an unauthenticated attacker can inject arbitrary JavaScript into the speaker-notes of the slide-mode feature by embedding an iframe hosting the malicious code into the slides or by embedding the HedgeDoc instance into another page. The problem is patched in version 1.9.0. There are no known workarounds aside from upgrading.

Related CVEs

Other vulnerabilities affecting the same vendor(s)