CVE-2021-23341

mediumpriority · track · 31EPSS 0.032 · 88 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

3.17% (88th) EPSS

CVSS 5 · medium

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · report@snyk.ioexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400US

affected products (3)

Products and version ranges known to be affected.

n/a prismjsunspecified → 1.23.0enisa_euvdEU
prismjs prism< 1.23.0nvdUScpe:2.3:a:prismjs:prism:*:*:*:*:*:*:*:*
npm prismjs< 1.23.0osvUSpkg:npm/prismjs

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-h4hr-7fg3-h35wDenial of service in prismjs2021-03-01ghsa · osvUS
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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2021-02-18modified 2026-06-17

references (21)

External citations — patches, advisories, analysis.

scry

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