CVE-2021-32723
Regular Expression Denial of Service (ReDoS) in Prism
7.4
HIGH
CVSS 3.1
EPSS 0.37%
Description
Some languages before 1.24.0 are vulnerable to Regular Expression Denial of Service (ReDoS). ### Impact 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. Do not use the following languages to highlight untrusted text. - ASCIIDoc - ERB Other languages are __not__ affected and can be used to highlight untrusted text. ### Patches This problem has been fixed in Prism v1.24. ### References - PrismJS/prism#2774 - PrismJS/prism#2688
How to fix CVE-2021-32723
To remediate CVE-2021-32723, upgrade the affected package to a fixed version below.
- —upgrade to 1.24.0 or later
Is CVE-2021-32723 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.24.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H |