Unrated

DEBIAN-CVE-2026-25896

Type: advisorySource: OSV1 source record

fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. From 4.1.3to before 5.3.5, a dot (.) in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow built-in XML entities (<, >, &, ", ') with arbitrary values. This bypasses entity encoding and leads to XSS when parsed output is rendered. This vulnerability is fixed in 5.3.5.

Announced 20 Feb 2026Source revision 1

Original source ↗

DEBIAN-CVE-2026-25896

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-2026-25896

node-webfont

Source reference: /affected/0/package/name

Affected versions: 11.4.0+dfsg2+~cs35.7.26-10
Source reference: /affected/0/versions
11.4.0+dfsg2+~cs35.7.26-11
Source reference: /affected/0/versions
11.4.0+dfsg2+~cs35.7.26-12
Source reference: /affected/0/versions
11.4.0+dfsg2+~cs35.7.26-13
Source reference: /affected/0/versions
11.4.0+dfsg2+~cs35.7.26-14
Source reference: /affected/0/versions
11.4.0+dfsg2+~cs35.7.26-15
Source reference: /affected/0/versions
11.4.0+dfsg2+~cs35.7.26-16
Source reference: /affected/0/versions
11.4.0+dfsg2+~cs35.7.26-18
Source reference: /affected/0/versions
11.4.0+dfsg2+~cs35.7.26-19
Source reference: /affected/0/versions
11.4.0+dfsg2+~cs35.7.26-20
Source reference: /affected/0/versions
11.4.0+dfsg2+~cs35.7.26-21
Source reference: /affected/0/versions
11.4.0+dfsg2+~cs35.7.26-7
Source reference: /affected/0/versions
11.4.0+dfsg2+~cs35.7.26-8
Source reference: /affected/0/versions
11.4.0+dfsg2+~cs35.7.26-9
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

node-webfont

Source reference: /affected/1/package/name

Affected versions: 11.4.0+dfsg2+~cs35.7.26-13
Source reference: /affected/1/versions
11.4.0+dfsg2+~cs35.7.26-14
Source reference: /affected/1/versions
11.4.0+dfsg2+~cs35.7.26-15
Source reference: /affected/1/versions
11.4.0+dfsg2+~cs35.7.26-16
Source reference: /affected/1/versions
11.4.0+dfsg2+~cs35.7.26-18
Source reference: /affected/1/versions
11.4.0+dfsg2+~cs35.7.26-19
Source reference: /affected/1/versions
11.4.0+dfsg2+~cs35.7.26-20
Source reference: /affected/1/versions
11.4.0+dfsg2+~cs35.7.26-21
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

node-webfont

Source reference: /affected/2/package/name

Affected versions: 11.4.0+dfsg2+~cs35.7.26-13
Source reference: /affected/2/versions
11.4.0+dfsg2+~cs35.7.26-14
Source reference: /affected/2/versions
11.4.0+dfsg2+~cs35.7.26-15
Source reference: /affected/2/versions
11.4.0+dfsg2+~cs35.7.26-16
Source reference: /affected/2/versions
11.4.0+dfsg2+~cs35.7.26-18
Source reference: /affected/2/versions
11.4.0+dfsg2+~cs35.7.26-19
Source reference: /affected/2/versions
11.4.0+dfsg2+~cs35.7.26-20
Source reference: /affected/2/versions
11.4.0+dfsg2+~cs35.7.26-21
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": "node-webfont",
      "purl": "pkg:deb/debian/node-webfont?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "11.4.0+dfsg2+~cs35.7.26-10",
      "11.4.0+dfsg2+~cs35.7.26-11",
      "11.4.0+dfsg2+~cs35.7.26-12",
      "11.4.0+dfsg2+~cs35.7.26-13",
      "11.4.0+dfsg2+~cs35.7.26-14",
      "11.4.0+dfsg2+~cs35.7.26-15",
      "11.4.0+dfsg2+~cs35.7.26-16",
      "11.4.0+dfsg2+~cs35.7.26-18",
      "11.4.0+dfsg2+~cs35.7.26-19",
      "11.4.0+dfsg2+~cs35.7.26-20",
      "11.4.0+dfsg2+~cs35.7.26-21",
      "11.4.0+dfsg2+~cs35.7.26-7",
      "11.4.0+dfsg2+~cs35.7.26-8",
      "11.4.0+dfsg2+~cs35.7.26-9"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25896.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "node-webfont",
      "purl": "pkg:deb/debian/node-webfont?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "11.4.0+dfsg2+~cs35.7.26-13",
      "11.4.0+dfsg2+~cs35.7.26-14",
      "11.4.0+dfsg2+~cs35.7.26-15",
      "11.4.0+dfsg2+~cs35.7.26-16",
      "11.4.0+dfsg2+~cs35.7.26-18",
      "11.4.0+dfsg2+~cs35.7.26-19",
      "11.4.0+dfsg2+~cs35.7.26-20",
      "11.4.0+dfsg2+~cs35.7.26-21"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25896.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "node-webfont",
      "purl": "pkg:deb/debian/node-webfont?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "11.4.0+dfsg2+~cs35.7.26-13",
      "11.4.0+dfsg2+~cs35.7.26-14",
      "11.4.0+dfsg2+~cs35.7.26-15",
      "11.4.0+dfsg2+~cs35.7.26-16",
      "11.4.0+dfsg2+~cs35.7.26-18",
      "11.4.0+dfsg2+~cs35.7.26-19",
      "11.4.0+dfsg2+~cs35.7.26-20",
      "11.4.0+dfsg2+~cs35.7.26-21"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25896.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #56267 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 16:32:00 GMT
Publisher date: Fri, 20 Feb 2026 21:19:27 GMT

Read the original announcement