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DEBIAN-CVE-2026-13676

Type: advisorySource: OSV1 source record

fast-uri versions 2.3.1 through 3.1.2 and 4.0.0 fail to canonicalize Unicode (IDN) hostnames for HTTP-family URLs. The IDN conversion path calls a helper that does not exist on the global URL constructor, silently leaving the host in its original Unicode form while normalize() and equal() still return values that differ from a WHATWG-compatible URL parser. Applications that use fast-uri to enforce host-based policy (denylists, loopback filtering, redirect validation, outbound proxy routing) before passing the same URL to Node's URL or fetch can be bypassed when the two implementations resolve the same input to different hosts. Patches: upgrade to fast-uri 3.1.3 for the 3.x line or 4.0.1 for the 4.x line. Workarounds: enforce host policy using the same URL parser used for the actual request, or reject non-ASCII hosts before policy checks.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-13676

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-2026-13676

node-ajv

Source reference: /affected/0/package/name

Affected versions
8.12.0~ds+~2.1.1-5

Source reference: /affected/0/versions

8.17.1~ds+~3.0.1+~3.1.0-1

Source reference: /affected/0/versions

8.17.1~ds+~3.0.1+~3.1.0-2

Source reference: /affected/0/versions

8.17.1~ds+~3.0.1+~3.1.0-3

Source reference: /affected/0/versions

8.17.1~ds+~3.0.1+~3.1.0-4

Source reference: /affected/0/versions

8.18.0~ds+~cs6.1.1-1

Source reference: /affected/0/versions

8.18.0~ds+~cs6.1.1-2

Source reference: /affected/0/versions

8.20.0~ds+~cs6.1.3-1

Source reference: /affected/0/versions

8.20.0~ds+~cs7.1.2-1

Source reference: /affected/0/versions

8.20.0~ds+~cs7.1.3-1

Source reference: /affected/0/versions

8.20.0~ds+~cs7.1.3-2

Source reference: /affected/0/versions

8.20.0~ds+~cs7.1.3-3

Source reference: /affected/0/versions

8.20.0~ds+~cs7.1.4-1

Source reference: /affected/0/versions

8.20.0~ds+~cs7.1.5-1

Source reference: /affected/0/versions

8.20.0~ds+~cs7.1.6-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

node-ajv

Source reference: /affected/1/package/name

Affected versions
8.12.0~ds+~2.1.1-5

Source reference: /affected/1/versions

8.17.1~ds+~3.0.1+~3.1.0-1

Source reference: /affected/1/versions

8.17.1~ds+~3.0.1+~3.1.0-2

Source reference: /affected/1/versions

8.17.1~ds+~3.0.1+~3.1.0-3

Source reference: /affected/1/versions

8.17.1~ds+~3.0.1+~3.1.0-4

Source reference: /affected/1/versions

8.18.0~ds+~cs6.1.1-1

Source reference: /affected/1/versions

8.18.0~ds+~cs6.1.1-2

Source reference: /affected/1/versions

8.20.0~ds+~cs6.1.3-1

Source reference: /affected/1/versions

Fixed versions
8.20.0~ds+~cs7.1.2-1

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"
          }
        ]
      }
    ],
    "package": {
      "name": "node-ajv",
      "purl": "pkg:deb/debian/node-ajv?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "8.12.0~ds+~2.1.1-5",
      "8.17.1~ds+~3.0.1+~3.1.0-1",
      "8.17.1~ds+~3.0.1+~3.1.0-2",
      "8.17.1~ds+~3.0.1+~3.1.0-3",
      "8.17.1~ds+~3.0.1+~3.1.0-4",
      "8.18.0~ds+~cs6.1.1-1",
      "8.18.0~ds+~cs6.1.1-2",
      "8.20.0~ds+~cs6.1.3-1",
      "8.20.0~ds+~cs7.1.2-1",
      "8.20.0~ds+~cs7.1.3-1",
      "8.20.0~ds+~cs7.1.3-2",
      "8.20.0~ds+~cs7.1.3-3",
      "8.20.0~ds+~cs7.1.4-1",
      "8.20.0~ds+~cs7.1.5-1",
      "8.20.0~ds+~cs7.1.6-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-13676.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "8.20.0~ds+~cs7.1.2-1"
          }
        ]
      }
    ],
    "package": {
      "name": "node-ajv",
      "purl": "pkg:deb/debian/node-ajv?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "8.12.0~ds+~2.1.1-5",
      "8.17.1~ds+~3.0.1+~3.1.0-1",
      "8.17.1~ds+~3.0.1+~3.1.0-2",
      "8.17.1~ds+~3.0.1+~3.1.0-3",
      "8.17.1~ds+~3.0.1+~3.1.0-4",
      "8.18.0~ds+~cs6.1.1-1",
      "8.18.0~ds+~cs6.1.1-2",
      "8.20.0~ds+~cs6.1.3-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-13676.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#55510 · Revision 1
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Publisher date
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