prismjs Regular Expression Denial of Service vulnerability

Description

Prism is a syntax highlighting library. The prismjs package is vulnerable to ReDoS (regular expression denial of service). An attacker that is able to provide a crafted HTML comment as input may cause an application to consume an excessive amount of CPU.

Recommendation

Update the prismjs package to the latest compatible version. Followings are version details:

• Affected version(s): < 1.25.0
• Patched version(s): 1.25.0

References

• GHSA-hqhp-5p83-hx96
• huntr.dev
• CVE-2021-3801
• CWE-400
• CAPEC-310
• OWASP 2021-A6

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• fastify-reply-from affected by bypass of reply forwarding - CVE-2025-66415
• Finance.js vulnerable to DoS via the seekZero() parameter - CVE-2025-56572

Tags:

npm

prismjs