CVE-2021-39175
8.1 · HIGHOverview
CVE-2021-39175 is a high-severity vulnerability affecting hedgedoc hedgedoc. It was published on August 30, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from hedgedoc. Update hedgedoc to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| hedgedoc | hedgedoc | >= 0, < 1.9.0 | Affected |
References
Frequently Asked Questions
What is CVE-2021-39175?
CVE-2021-39175 is a high-severity vulnerability affecting hedgedoc hedgedoc. It was published on August 30, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2021-39175?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-39175?
Check the references section for vendor advisories and patches from hedgedoc. Update hedgedoc to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-39175?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-39175 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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