CVE-2021-32723
Some languages before 1.24.0 are vulnerable to Regular Expression Denial of Service (ReDoS).
Does this matter?
Lower severity and a low EPSS score (1.42%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 1.42% probability · 73th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- prismjs/prism · oracle/application express
- Source
- security-advisories@github.com
EPSS 1.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/PrismJS/prism/pull/2688Patch, Third Party Advisory
- https://github.com/PrismJS/prism/pull/2774Patch, Third Party Advisory
- https://github.com/PrismJS/prism/security/advisories/GHSA-gj77-59wh-66hgThird Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
- https://github.com/PrismJS/prism/pull/2688Patch, Third Party Advisory
- https://github.com/PrismJS/prism/pull/2774Patch, Third Party Advisory
- https://github.com/PrismJS/prism/security/advisories/GHSA-gj77-59wh-66hgThird Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.