Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/swc-project/swc/commit/e1877b44bdac8abc9fd51e984d584f40f69998
- https://github.com/swc-project/swc/pull/12080
- https://github.com/swc-project/swc/releases/tag/v1.15.47
- https://github.com/swc-project/swc/releases/tag/v1.15.47-nightly-20260729.1
- https://github.com/swc-project/swc/security/advisories/GHSA-5qr2-v392-m9g8
FAQ
What is CVE-2026-72925?
CVE-2026-72925 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 ...
How severe is CVE-2026-72925?
CVE-2026-72925 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-72925?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.