Bug 2538368 (CVE-2026-93749) - CVE-2026-93749 source-map-js: source-map-js: Denial of Service via malformed indexed source maps
Summary: CVE-2026-93749 source-map-js: source-map-js: Denial of Service via malformed ...
Keywords:
Status: NEW
Alias: CVE-2026-93749
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-22 18:18 UTC by OSIDB Bzimport
Modified: 2026-09-30 16:08 UTC (History)
168 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-22 18:18:34 UTC 
source-map-js through 1.2.1 fails to validate the per-section offset line value in indexed source maps, allowing attackers to specify arbitrary numeric values. Attackers can supply extremely large offset line values that cause synchronous event loop blocking for extended periods, preventing the service from handling other requests.
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