HighFix available

CVE-2026-73646 in postcss - Patched by Root

Type: advisorySource: OSV1 source record

Root has patched CVE-2026-73646 in the postcss package for Root:npm. Multiple fixed versions available.

Announced 25 Sept 2026Group revision 1

ROOT-APP-NPM-CVE-2026-73646

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:ROOT-APP-NPM-CVE-2026-73646

postcss

Source reference: /affected/0/package/name

Affected versions: Not stated in this record
Fixed versions: 8.4.49-aikido.4
Source reference: /affected/0/ranges
6.0.1-aikido.2
Source reference: /affected/0/ranges
8.4.38-aikido.2
Source reference: /affected/0/ranges
8.5.3-aikido.3
Source reference: /affected/0/ranges
8.4.21-aikido.2
Source reference: /affected/0/ranges
8.5.15-aikido.2
Source reference: /affected/0/ranges
7.0.39-aikido.7
Source reference: /affected/0/ranges
8.5.8-aikido.5
Source reference: /affected/0/ranges
5.2.18-aikido.5
Source reference: /affected/0/ranges
7.0.32-aikido.1
Source reference: /affected/0/ranges
8.4.32-aikido.1
Source reference: /affected/0/ranges
7.0.36-aikido.1
Source reference: /affected/0/ranges
8.5.6-aikido.5
Source reference: /affected/0/ranges
6.0.23-aikido.3
Source reference: /affected/0/ranges
8.4.31-aikido.4
Source reference: /affected/0/ranges
Prerequisites: Not stated in this record

@rootio/postcss

Source reference: /affected/1/package/name

Affected versions: Not stated in this record
Fixed versions: 8.4.49-root.io.4
Source reference: /affected/1/ranges
6.0.1-root.io.2
Source reference: /affected/1/ranges
8.4.38-root.io.2
Source reference: /affected/1/ranges
8.5.3-root.io.3
Source reference: /affected/1/ranges
8.4.21-root.io.2
Source reference: /affected/1/ranges
8.5.15-root.io.2
Source reference: /affected/1/ranges
7.0.39-root.io.7
Source reference: /affected/1/ranges
8.5.8-root.io.5
Source reference: /affected/1/ranges
5.2.18-root.io.5
Source reference: /affected/1/ranges
7.0.32-root.io.1
Source reference: /affected/1/ranges
8.4.32-root.io.1
Source reference: /affected/1/ranges
7.0.36-root.io.1
Source reference: /affected/1/ranges
8.5.6-root.io.5
Source reference: /affected/1/ranges
6.0.23-root.io.3
Source reference: /affected/1/ranges
8.4.31-root.io.4
Source reference: /affected/1/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"
          },
          {
            "fixed": "8.4.49-aikido.4"
          },
          {
            "fixed": "6.0.1-aikido.2"
          },
          {
            "fixed": "8.4.38-aikido.2"
          },
          {
            "fixed": "8.5.3-aikido.3"
          },
          {
            "fixed": "8.4.21-aikido.2"
          },
          {
            "fixed": "8.5.15-aikido.2"
          },
          {
            "fixed": "7.0.39-aikido.7"
          },
          {
            "fixed": "8.5.8-aikido.5"
          },
          {
            "fixed": "5.2.18-aikido.5"
          },
          {
            "fixed": "7.0.32-aikido.1"
          },
          {
            "fixed": "8.4.32-aikido.1"
          },
          {
            "fixed": "7.0.36-aikido.1"
          },
          {
            "fixed": "8.5.6-aikido.5"
          },
          {
            "fixed": "6.0.23-aikido.3"
          },
          {
            "fixed": "8.4.31-aikido.4"
          }
        ]
      }
    ],
    "package": {
      "name": "postcss",
      "ecosystem": "Root:npm"
    },
    "database_specific": {
      "source": "https://api.root.io/external/osv/ROOT-APP-NPM-CVE-2026-73646.json",
      "root_patched": true,
      "upstream_version": "8.4.49",
      "all_fixed_versions": [
        "8.4.49-aikido.4",
        "6.0.1-aikido.2",
        "8.4.38-aikido.2",
        "8.5.3-aikido.3",
        "8.4.21-aikido.2",
        "8.5.15-aikido.2",
        "7.0.39-aikido.7",
        "8.5.8-aikido.5",
        "5.2.18-aikido.5",
        "7.0.32-aikido.1",
        "8.4.32-aikido.1",
        "7.0.36-aikido.1",
        "8.5.6-aikido.5",
        "6.0.23-aikido.3",
        "8.4.31-aikido.4"
      ],
      "root_patch_version": "aikido.4",
      "total_fixed_versions": 15
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "8.4.49-root.io.4"
          },
          {
            "fixed": "6.0.1-root.io.2"
          },
          {
            "fixed": "8.4.38-root.io.2"
          },
          {
            "fixed": "8.5.3-root.io.3"
          },
          {
            "fixed": "8.4.21-root.io.2"
          },
          {
            "fixed": "8.5.15-root.io.2"
          },
          {
            "fixed": "7.0.39-root.io.7"
          },
          {
            "fixed": "8.5.8-root.io.5"
          },
          {
            "fixed": "5.2.18-root.io.5"
          },
          {
            "fixed": "7.0.32-root.io.1"
          },
          {
            "fixed": "8.4.32-root.io.1"
          },
          {
            "fixed": "7.0.36-root.io.1"
          },
          {
            "fixed": "8.5.6-root.io.5"
          },
          {
            "fixed": "6.0.23-root.io.3"
          },
          {
            "fixed": "8.4.31-root.io.4"
          }
        ]
      }
    ],
    "package": {
      "name": "@rootio/postcss",
      "ecosystem": "Root:npm"
    },
    "database_specific": {
      "source": "https://api.root.io/external/osv/ROOT-APP-NPM-CVE-2026-73646.json",
      "root_patched": true,
      "upstream_version": "8.4.49",
      "all_fixed_versions": [
        "8.4.49-root.io.4",
        "6.0.1-root.io.2",
        "8.4.38-root.io.2",
        "8.5.3-root.io.3",
        "8.4.21-root.io.2",
        "8.5.15-root.io.2",
        "7.0.39-root.io.7",
        "8.5.8-root.io.5",
        "5.2.18-root.io.5",
        "7.0.32-root.io.1",
        "8.4.32-root.io.1",
        "7.0.36-root.io.1",
        "8.5.6-root.io.5",
        "6.0.23-root.io.3",
        "8.4.31-root.io.4"
      ],
      "root_patch_version": "root.io.4",
      "total_fixed_versions": 15
    }
  }
]

Publisher severity

high

Source reference: /database_specific/severity

Event: #14980 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 00:51:30 GMT
Publisher date: Fri, 25 Sep 2026 06:36:42 GMT

Read the original announcement

Revision history

25 Oct 2026ROOT-APP-NPM-CVE-2026-73646 · Revision 1Source updated