---
id: CVE-2026-72925
title: SWC is a TypeScript / JavaScript compiler written in Rust
summary: >-
  SWC is a TypeScript / JavaScript compiler written in Rust. Prior to @swc/html
  1.15.47-nightly-20260729.1 and swc_html_minifier 59.0.0, the minifyJson
  processing in crates/swc_html_minifier/src/lib.rs parsed and serialized
  attacker-contro…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
  - CWE-116
vendor: swc
product: '@swc/html'
affected:
  - '@swc/html < 1.15.47-nightly-20260729.1'
  - swc_html_minifier < 59.0.0
patched:
  - '@swc/html 1.15.47-nightly-20260729.1'
  - swc_html_minifier 59.0.0
published: '2026-08-11'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T20:05:53.723'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72925'
references:
  - url: >-
      https://github.com/swc-project/swc/commit/e1877b44bdac8abc9fd51e984d584f40f6999832
    label: security-advisories@github.com
  - url: 'https://github.com/swc-project/swc/pull/12080'
    label: security-advisories@github.com
  - url: 'https://github.com/swc-project/swc/releases/tag/v1.15.47'
    label: security-advisories@github.com
  - url: >-
      https://github.com/swc-project/swc/releases/tag/v1.15.47-nightly-20260729.1
    label: security-advisories@github.com
  - url: 'https://github.com/swc-project/swc/security/advisories/GHSA-5qr2-v392-m9g8'
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72925'
  - url: 'https://github.com/swc-project/swc'
  - url: 'https://github.com/advisories/GHSA-5qr2-v392-m9g8'
tags:
  - nvd
  - osv
  - npm
  - ghsa
epss: 0.00338
epssPercentile: 0.24519
aliases:
  - GHSA-5qr2-v392-m9g8
ecosystem: npm
ingestedAt: '2026-09-08T19:08:49.635Z'
---

## Overview

SWC is a TypeScript / JavaScript compiler written in Rust. Prior to @swc/html 1.15.47-nightly-20260729.1 and swc_html_minifier 59.0.0, the minifyJson processing in crates/swc_html_minifier/src/lib.rs parsed and serialized attacker-controlled JSON in application/json and application/ld+json script elements without the escape_json_for_html_script behavior to re-escape less-than signs, allowing a closing script sequence to terminate the element early and execute script in the generated page's origin. This issue is fixed in @swc/html 1.15.47-nightly-20260729.1 and swc_html_minifier 59.0.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-72925)

Affected packages:

- `@swc/html < 1.15.47-nightly-20260729.1`
- `swc_html_minifier < 59.0.0`

Patched in:

- `@swc/html 1.15.47-nightly-20260729.1`
- `swc_html_minifier 59.0.0`

Source: https://osv.dev/vulnerability/GHSA-5qr2-v392-m9g8