DEBIAN-CVE-2026-73646

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Source
https://security-tracker.debian.org/tracker/CVE-2026-73646
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73646.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-73646
Upstream
Published
2026-08-17T16:17:47Z
Modified
2026-09-19T23:00:28Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

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 8.5.18, lib/previous-map.js loadMap() passes attacker-controlled sourceMappingURL values to join(dirname(opts.from), annotation), and loadFile() permits traversed or absolute .map paths, allowing untrusted CSS processed without map: false to disclose sourcesContent from arbitrary reachable .map files through result.map. This issue is fixed in version 8.5.18.

References

Affected packages

Debian:12 / node-postcss

Package

Name
node-postcss
Purl
pkg:deb/debian/node-postcss?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.4.20+~cs8.0.23-1
8.4.20+~cs8.0.23-1+deb12u1
8.4.31+~cs8.0.26-1
8.4.39+~cs9.2.29-1
8.4.49+~cs9.2.32-1
8.5.6+~cs9.3.28-1
8.5.8+~cs9.3.30-1
8.5.9+~cs9.3.30-1
8.5.12+~cs9.3.32-1
8.5.14+~cs9.3.34-1
8.5.15+~cs9.3.34-1
8.5.15+~cs9.3.38-1
8.5.15+~cs9.3.39-1
8.5.19+~cs10.2.23-1
8.5.21+~cs10.2.23-1
8.5.23+~cs10.2.23-1
8.5.25+~cs10.2.23-1
8.5.26+~cs10.2.24-1
8.5.28+~cs10.2.24-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73646.json"

Debian:13 / node-postcss

Package

Name
node-postcss
Purl
pkg:deb/debian/node-postcss?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.4.49+~cs9.2.32-1
8.5.6+~cs9.3.28-1
8.5.8+~cs9.3.30-1
8.5.9+~cs9.3.30-1
8.5.12+~cs9.3.32-1
8.5.14+~cs9.3.34-1
8.5.15+~cs9.3.34-1
8.5.15+~cs9.3.38-1
8.5.15+~cs9.3.39-1
8.5.19+~cs10.2.23-1
8.5.21+~cs10.2.23-1
8.5.23+~cs10.2.23-1
8.5.25+~cs10.2.23-1
8.5.26+~cs10.2.24-1
8.5.28+~cs10.2.24-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73646.json"

Debian:14 / node-postcss

Package

Name
node-postcss
Purl
pkg:deb/debian/node-postcss?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
8.5.19+~cs10.2.23-1

Affected versions

8.*
8.4.49+~cs9.2.32-1
8.5.6+~cs9.3.28-1
8.5.8+~cs9.3.30-1
8.5.9+~cs9.3.30-1
8.5.12+~cs9.3.32-1
8.5.14+~cs9.3.34-1
8.5.15+~cs9.3.34-1
8.5.15+~cs9.3.38-1
8.5.15+~cs9.3.39-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73646.json"