CVE-2026-72925
Published:August 11, 2026
Updated:August 31, 2026
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.
Affected Packages
https://github.com/swc-project/swc.git (GITHUB):
Affected version(s) >=v0.5.0 <v1.15.47-nightly-20260729.1Fix Suggestion:
Update to version v1.15.47-nightly-20260729.1@swc/html (NPM):
Affected version(s) >=0.0.5 <1.15.47-nightly-20260729.1Fix Suggestion:
Update to version 1.15.47-nightly-20260729.1swc_html_minifier (RUST):
Affected version(s) >=0.1.0 <59.0.0Fix Suggestion:
Update to version 59.0.0Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.19