Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| PrismJS | prism | >= 1.14.0, < 1.27.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | node-prismjs | 1.27.0+dfsg+~1.26.0-1 | — |
| Debian 13 | node-prismjs | 1.27.0+dfsg+~1.26.0-1 | — |
| Debian 12 | node-prismjs | 1.27.0+dfsg+~1.26.0-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | node-prismjs | No fix yet | — |
| Ubuntu 20.04 LTS | node-prismjs | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | prismjs | >= 1.14.0, < 1.27.0 | 1.27.0 | GHSA-3949-f494-cm99 |
Advisories 1
- WID-SEC-2023-0554 IBM Maximo Asset Management: Schwachstelle ermöglicht Cross-Site Scripting BSI CERT-Bund (WID) · Mar 2, 2023