PostCSS: incomplete fix of CVE-2026-45623 - attacker-controlled sourceMappingURL reads arbitrary .map files when `from` is unset

MediumVendor CVSS 5.3 / 10 2 CVEs Published Aug 7, 2026 at 1:20 AM UTC

Summary

Mariner

Separate remediation guidance was not included in the collected bulletin.

Aug 7, 2026 at 1:20 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Aug 20, 2026 at 6:50 PM UTC
Added to SecurityAlert
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Details collected from Microsoft Security Response Center.

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