CVE-2022-23647

Cross-site Scripting in Prism

7.5 HighFix available

Prism is a syntax highlighting library. Starting with version 1.14.0 and prior to version 1.27.0, Prism's command line plugin can be used by attackers to achieve a cross-site scripting attack. The command line plugin did not properly escape its output, leading to the input text being inserted into the DOM as HTML code. Server-side usage of Prism is not impacted. Websites that do not use the Command Line plugin are also not impacted. This bug has been fixed in v1.27.0. As a workaround, do not use the command line plugin on untrusted inputs, or sanitize all code blocks (remove all HTML code text) from all code blocks that use the command line plugin.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: Low
Availability: Low

Exploit likelihood

1.43%Up 0.5 points since Feb 19, 2022

What each source reports

CVE List Score used 7.5

Cross-site Scripting in Prism

Record: CVE-2022-23647
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2022-0785 7.5

Record: EUVD-2022-0785
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L
Updated: 2026-11-02

GitHub AdvisoriesGHSA-3949-f494-cm99 7.5

Cross-site Scripting in Prism

Impact

Prism's Command line plugin can be used by attackers to achieve an XSS attack. The Command line plugin did not properly escape its output, leading to the input text being inserted into the DOM as HTML code.

Server-side usage of Prism is not impacted. Websites that do not use the Command Line plugin are also not impacted.

Patches

This bug has been fixed in v1.27.0.

Workarounds

Do not use the Command line plugin on untrusted inputs, or sanitized all code blocks (remove all HTML code text) from all code blocks that use the Command line plugin.

References

https://github.com/PrismJS/prism/pull/3341

Record: GHSA-3949-f494-cm99
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

NVD 7.5

Record: CVE-2022-23647
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 7.5

Cross-site Scripting in Prism

Record: CVE-2022-23647
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

OSVDEBIAN-CVE-2022-23647 6.1

Record: DEBIAN-CVE-2022-23647
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-03

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OSVGHSA-3949-f494-cm99 7.5

Cross-site Scripting in Prism

Impact

Server-side usage of Prism is not impacted. Websites that do not use the Command Line plugin are also not impacted.

Patches

This bug has been fixed in v1.27.0.

Workarounds

Do not use the Command line plugin on untrusted inputs, or sanitized all code blocks (remove all HTML code text) from all code blocks that use the Command line plugin.

References

https://github.com/PrismJS/prism/pull/3341

Record: GHSA-3949-f494-cm99
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

OSVUBUNTU-CVE-2022-23647 7.5

Record: UBUNTU-CVE-2022-23647
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVCLSA-2026-1793304056 No score

TuxCare security update for prismjs (6 CVEs)

TuxCare rebuilt prismjs to address 6 CVEs. Fixed in 1.17.1-tuxcare.1.

Record: CLSA-2026-1793304056
Updated: 2026-11-02

OSVROOT-APP-NPM-CVE-2022-23647 No score

CVE-2022-23647 in prismjs - Patched by Root

Root has patched CVE-2022-23647 in the prismjs package for Root:npm. Multiple fixed versions available.

Record: ROOT-APP-NPM-CVE-2022-23647
Updated: 2026-11-02

Affected products

prismjs prism

Affected packages

Affected packages
Package	Affected	Fixed
`prismjs` npm	1.14.0 up to 1.27.0	1.27.0
`prismjs` TuxCare:npm From an advisory covering 6 CVEs	1.17.1-tuxcare.0 up to 1.17.1-tuxcare.1, plus listed versions 1.17.1	1.17.1-tuxcare.1
`node-prismjs` Debian:12	before 1.27.0+dfsg+~1.26.0-1	1.27.0+dfsg+~1.26.0-1
`node-prismjs` Debian:13	before 1.27.0+dfsg+~1.26.0-1	1.27.0+dfsg+~1.26.0-1
`node-prismjs` Debian:14	before 1.27.0+dfsg+~1.26.0-1	1.27.0+dfsg+~1.26.0-1
`prismjs` Root:npm	before 1.17.1-aikido.1	1.17.1-aikido.11.27.0-aikido.2
`@rootio/prismjs` Root:npm	before 1.17.1-root.io.1	1.17.1-root.io.11.27.0-root.io.21.27.0-root.io.1
`node-prismjs` Ubuntu:20.04:LTS	All versions, plus listed versions 1.11.0+dfsg-21.11.0+dfsg-3	None known
`node-prismjs` Ubuntu:22.04:LTS	All versions, plus listed versions 1.23.0+dfsg-11.25.0+dfsg-11.27.0+dfsg+~1.26.0-1	None known

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts	OSV
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-23647 is a high vulnerability (CVSS 7.5) in Prismjs Prism, published February 18, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.43%, the 73rd percentile. Fixed in prismjs 1.27.0.

References

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