Improper Validation of Specified Quantity in Input Affecting node-postcss package, versions *


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.35% (29th percentile)

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  • Snyk IDSNYK-ECHOLATEST-NODEPOSTCSS-19946198
  • published19 Sept 2026
  • disclosed18 Sept 2026

Introduced: 18 Sep 2026

NewCVE-2026-93749  (opens in a new tab)
CWE-1284  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest node-postcss.

NVD Description

Note: Versions mentioned in the description apply only to the upstream node-postcss package and not the node-postcss package as distributed by Echo. See How to fix? for Echo:latest 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