CVE-2021-39175
High
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.
SeverityHigh
CVSS8.1
Exploit probability—
ProductHedgedoc
PublishedAug 30, 2021
First seenAug 30, 2021
Weakness typeCWE-74InjectionCWE-346CWE-346
How to fix
Update
- hedgedoc hedgedoc1.9.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| hedgedoc hedgedoc | v < 1.9.0 | 1.9.0 |
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