Critical

DEBIAN-CVE-2026-88920

Type: advisorySource: OSV1 source record

An authentication bypass in the DOM security processor in Apache WSS4J allows unauthenticated remote attackers to forge authenticated SOAP messages via a crafted unsigned SAML sender-vouches assertion containing an attacker-controlled key. Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.

Announced 30 Sept 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-88920

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-2026-88920

wss4j

Source reference: /affected/0/package/name

Affected versions: 1.6.19-3
Source reference: /affected/0/versions
1.6.19-4
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

wss4j

Source reference: /affected/1/package/name

Affected versions: 1.6.19-4
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

wss4j

Source reference: /affected/2/package/name

Affected versions: 1.6.19-4
Source reference: /affected/2/versions
Fixed versions: Not stated in this record
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": "wss4j",
      "purl": "pkg:deb/debian/wss4j?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.6.19-3",
      "1.6.19-4"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88920.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "wss4j",
      "purl": "pkg:deb/debian/wss4j?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.6.19-4"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88920.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "wss4j",
      "purl": "pkg:deb/debian/wss4j?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1.6.19-4"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88920.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Related CVEs: CVE-2026-88920
Source reference: /upstream

Publisher severity

critical

Source reference: /severity/0/score

Event: #72963 · Revision 1
Added to Heist Feed: Mon, 26 Oct 2026 00:20:35 GMT
Publisher date: Wed, 30 Sep 2026 12:17:14 GMT

Read the original announcement

Revision history

26 Oct 2026DEBIAN-CVE-2026-88920 · Revision 1Source updated