Directory Traversal Affecting node-postcss package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.45% (38th percentile)

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  • Snyk IDSNYK-ECHOLATEST-NODEPOSTCSS-18516570
  • published4 Aug 2026
  • disclosed3 Aug 2026

Introduced: 3 Aug 2026

CVE-2026-69153  (opens in a new tab)
CWE-22  (opens in a new tab)
CWE-200  (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.

PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Prior to 8.5.19, if from is unset, an attacker can cause PreviousMap.loadFile() to read an unintended source-map file by supplying an absolute or directory-traversal sourceMappingURL. The resulting map’s sources and sourcesContent may then be exposed to the application. This issue is fixed in version 8.5.19.

CVSS Base Scores

version 3.1