HIGH

CVE-2021-23341

CVSS v3

7.5

HIGH

EPSS Score

3.2 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

prismjsnpmall versions · fixed in 1.23.0

Vendor advisories

CVE-2021-23341 Red Hat Product Security8 known affected
nodejs-prismjs: Regular expression denial of service via prism-asciidoc prism-rest prism-tap and prism-eiffel components
servicemesh-grafana as a component of OpenShift Service Mesh 2.0 · servicemesh-grafana-prometheus as a component of OpenShift Service Mesh 2.0 · servicemesh-grafana.src as a component of OpenShift Service Mesh 2.0

Full record on NVD

Description

The package prismjs before 1.23.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the prism-asciidoc, prism-rest, prism-tap and prism-eiffel components.

Technical details

Published: 2021-02-18

Frequently asked questions

What is CVE-2021-23341?

The package prismjs before 1.23.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the prism-asciidoc, prism-rest, prism-tap and prism-eiffel components.

Is CVE-2021-23341 actively exploited?

Active exploitation of CVE-2021-23341 has not been confirmed. Its EPSS score was 3.2% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-23341?

CVE-2021-23341 has a CVSS v3 base score of 7.5 (HIGH severity).

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