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Vulnerability · Published Aug 30, 2021 · Assigned by GitHub_M

CVE-2021-39175XSS vector in slide mode speaker-view

High 8.1

In plain English

A high-severity injection in hedgedoc from hedgedoc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.6%top 51.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
hedgedoc hedgedoc < 1.9.0

Weakness: CWE-74, CWE-346 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

References