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DEBIAN-CVE-2026-21620

Type: advisorySource: OSV1 source record

Relative Path Traversal, Improper Isolation or Compartmentalization vulnerability in erlang otp erlang/otp (tftp_file modules), erlang otp inets (tftp_file modules), erlang otp tftp (tftp_file modules) allows Relative Path Traversal. This vulnerability is associated with program files lib/tftp/src/tftp_file.erl, src/tftp_file.erl. This issue affects OTP from OTP 17.0 before OTP 28.3.2, OTP 27.3.4.8 and OTP 26.2.5.17, corresponding to tftp from 1.0 before 1.2.4, 1.2.2.1 and 1.1.1.1; also inets from 5.10 before 7.0.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-21620

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-2026-21620

erlang

Source reference: /affected/0/package/name

Affected versions
1:25.2.3+dfsg-1

Source reference: /affected/0/versions

1:25.2.3+dfsg-1+deb12u1

Source reference: /affected/0/versions

1:25.2.3+dfsg-1+deb12u2

Source reference: /affected/0/versions

1:25.2.3+dfsg-1+deb12u3

Source reference: /affected/0/versions

Fixed versions
1:25.2.3+dfsg-1+deb12u4

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

erlang

Source reference: /affected/1/package/name

Affected versions
1:27.3.4.1+dfsg-1

Source reference: /affected/1/versions

1:27.3.4.1+dfsg-1+deb13u1

Source reference: /affected/1/versions

Fixed versions
1:27.3.4.1+dfsg-1+deb13u2

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

erlang

Source reference: /affected/2/package/name

Affected versions
1:27.3.4.1+dfsg-1

Source reference: /affected/2/versions

1:27.3.4.3+dfsg-1

Source reference: /affected/2/versions

1:27.3.4.4+dfsg-1

Source reference: /affected/2/versions

1:27.3.4.6+dfsg-1

Source reference: /affected/2/versions

Fixed versions
1:27.3.4.8+dfsg-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"
          },
          {
            "fixed": "1:25.2.3+dfsg-1+deb12u4"
          }
        ]
      }
    ],
    "package": {
      "name": "erlang",
      "purl": "pkg:deb/debian/erlang?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1:25.2.3+dfsg-1",
      "1:25.2.3+dfsg-1+deb12u1",
      "1:25.2.3+dfsg-1+deb12u2",
      "1:25.2.3+dfsg-1+deb12u3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21620.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:27.3.4.1+dfsg-1+deb13u2"
          }
        ]
      }
    ],
    "package": {
      "name": "erlang",
      "purl": "pkg:deb/debian/erlang?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1:27.3.4.1+dfsg-1",
      "1:27.3.4.1+dfsg-1+deb13u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21620.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:27.3.4.8+dfsg-1"
          }
        ]
      }
    ],
    "package": {
      "name": "erlang",
      "purl": "pkg:deb/debian/erlang?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1:27.3.4.1+dfsg-1",
      "1:27.3.4.3+dfsg-1",
      "1:27.3.4.4+dfsg-1",
      "1:27.3.4.6+dfsg-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21620.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57420 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-21620 · Revision 1Source updated