Improper Validation of Specified Index, Position, or Offset in Input Affecting firefox-debugsource package, versions <0:140.17.0-1.amzn2023.0.1


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.35% (27th percentile)

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  • Snyk IDSNYK-AMZN2023-FIREFOXDEBUGSOURCE-20873467
  • published13 Oct 2026
  • disclosed18 Sept 2026

Introduced: 18 Sep 2026

CVE-2026-93749  (opens in a new tab)
CWE-1285  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 firefox-debugsource to version 0:140.17.0-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-3214.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-debugsource package and not the firefox-debugsource package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1