UnratedFix available

DEBIAN-CVE-2026-69153

Type: advisorySource: OSV1 source record

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.

Announced 3 Aug 2026Source revision 1

Original source ↗

DEBIAN-CVE-2026-69153

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-69153

node-postcss

Source reference: /affected/0/package/name

Affected versions: 8.4.20+~cs8.0.23-1
Source reference: /affected/0/versions
8.4.20+~cs8.0.23-1+deb12u1
Source reference: /affected/0/versions
8.4.31+~cs8.0.26-1
Source reference: /affected/0/versions
8.4.39+~cs9.2.29-1
Source reference: /affected/0/versions
8.4.49+~cs9.2.32-1
Source reference: /affected/0/versions
8.5.12+~cs9.3.32-1
Source reference: /affected/0/versions
8.5.14+~cs9.3.34-1
Source reference: /affected/0/versions
8.5.15+~cs9.3.34-1
Source reference: /affected/0/versions
8.5.15+~cs9.3.38-1
Source reference: /affected/0/versions
8.5.15+~cs9.3.39-1
Source reference: /affected/0/versions
8.5.19+~cs10.2.23-1
Source reference: /affected/0/versions
8.5.21+~cs10.2.23-1
Source reference: /affected/0/versions
8.5.23+~cs10.2.23-1
Source reference: /affected/0/versions
8.5.25+~cs10.2.23-1
Source reference: /affected/0/versions
8.5.26+~cs10.2.24-1
Source reference: /affected/0/versions
8.5.28+~cs10.2.24-1
Source reference: /affected/0/versions
8.5.6+~cs9.3.28-1
Source reference: /affected/0/versions
8.5.8+~cs9.3.30-1
Source reference: /affected/0/versions
8.5.9+~cs9.3.30-1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

node-postcss

Source reference: /affected/1/package/name

Affected versions: 8.4.49+~cs9.2.32-1
Source reference: /affected/1/versions
8.5.12+~cs9.3.32-1
Source reference: /affected/1/versions
8.5.14+~cs9.3.34-1
Source reference: /affected/1/versions
8.5.15+~cs9.3.34-1
Source reference: /affected/1/versions
8.5.15+~cs9.3.38-1
Source reference: /affected/1/versions
8.5.15+~cs9.3.39-1
Source reference: /affected/1/versions
8.5.19+~cs10.2.23-1
Source reference: /affected/1/versions
8.5.21+~cs10.2.23-1
Source reference: /affected/1/versions
8.5.23+~cs10.2.23-1
Source reference: /affected/1/versions
8.5.25+~cs10.2.23-1
Source reference: /affected/1/versions
8.5.26+~cs10.2.24-1
Source reference: /affected/1/versions
8.5.28+~cs10.2.24-1
Source reference: /affected/1/versions
8.5.6+~cs9.3.28-1
Source reference: /affected/1/versions
8.5.8+~cs9.3.30-1
Source reference: /affected/1/versions
8.5.9+~cs9.3.30-1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

node-postcss

Source reference: /affected/2/package/name

Affected versions: 8.4.49+~cs9.2.32-1
Source reference: /affected/2/versions
8.5.12+~cs9.3.32-1
Source reference: /affected/2/versions
8.5.14+~cs9.3.34-1
Source reference: /affected/2/versions
8.5.15+~cs9.3.34-1
Source reference: /affected/2/versions
8.5.15+~cs9.3.38-1
Source reference: /affected/2/versions
8.5.15+~cs9.3.39-1
Source reference: /affected/2/versions
8.5.19+~cs10.2.23-1
Source reference: /affected/2/versions
8.5.21+~cs10.2.23-1
Source reference: /affected/2/versions
8.5.6+~cs9.3.28-1
Source reference: /affected/2/versions
8.5.8+~cs9.3.30-1
Source reference: /affected/2/versions
8.5.9+~cs9.3.30-1
Source reference: /affected/2/versions
Fixed versions: 8.5.23+~cs10.2.23-1
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "node-postcss",
      "purl": "pkg:deb/debian/node-postcss?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "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",
      "8.5.12+~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",
      "8.5.6+~cs9.3.28-1",
      "8.5.8+~cs9.3.30-1",
      "8.5.9+~cs9.3.30-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-69153.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "node-postcss",
      "purl": "pkg:deb/debian/node-postcss?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "8.4.49+~cs9.2.32-1",
      "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",
      "8.5.6+~cs9.3.28-1",
      "8.5.8+~cs9.3.30-1",
      "8.5.9+~cs9.3.30-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-69153.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "8.5.23+~cs10.2.23-1"
          }
        ]
      }
    ],
    "package": {
      "name": "node-postcss",
      "purl": "pkg:deb/debian/node-postcss?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "8.4.49+~cs9.2.32-1",
      "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",
      "8.5.6+~cs9.3.28-1",
      "8.5.8+~cs9.3.30-1",
      "8.5.9+~cs9.3.30-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-69153.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #56179 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 16:28:31 GMT
Publisher date: Mon, 03 Aug 2026 17:16:46 GMT

Read the original announcement