CVE-2021-32723
7.4 · HIGHOverview
CVE-2021-32723 is a high-severity vulnerability affecting prismjs prism. It was published on June 28, 2021 and has a CVSS 3.1 base score of 7.4 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Prism is a syntax highlighting library. Some languages before 1.24.0 are vulnerable to Regular Expression Denial of Service (ReDoS). When Prism is used to highlight untrusted (user-given) text, an attacker can craft a string that will take a very very long time to highlight. This problem has been fixed in Prism v1.24. As a workaround, do not use ASCIIDoc or ERB to highlight untrusted text. Other languages are not affected and can be used to highlight untrusted text.
Remediation
Check the references section for vendor advisories and patches from prismjs. Update prism 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 |
|---|---|---|---|
| prismjs | prism | >= 0, < 1.24.0 | Affected |
| oracle | application_express | >= 0, < 21.1.4 | Affected |
References
Frequently Asked Questions
What is CVE-2021-32723?
CVE-2021-32723 is a high-severity vulnerability affecting prismjs prism. It was published on June 28, 2021 and has a CVSS 3.1 base score of 7.4 (HIGH).
How severe is CVE-2021-32723?
This vulnerability has a CVSS 3.1 base score of 7.4, 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-2021-32723?
Check the references section for vendor advisories and patches from prismjs. Update prism 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-2021-32723?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-32723 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.
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