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DEBIAN-CVE-2026-27851

Type: advisorySource: OSV1 source record

When safe filter is used with variable expansion, all following pipelines on the same string are incorrectly interpreted as safe too, enabling unsafe data to be unescaped. This can enable SQL / LDAP injection attacks when used in authentication. Avoid using safe filter until on fixed version. No publicly available exploits are known.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-27851

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-2026-27851

dovecot

Source reference: /affected/0/package/name

Affected versions
1:2.4.1+dfsg1-6

Source reference: /affected/0/versions

1:2.4.1+dfsg1-6+deb13u1

Source reference: /affected/0/versions

1:2.4.1+dfsg1-6+deb13u2

Source reference: /affected/0/versions

1:2.4.1+dfsg1-6+deb13u3

Source reference: /affected/0/versions

1:2.4.1+dfsg1-6+deb13u4

Source reference: /affected/0/versions

1:2.4.1+dfsg1-6+deb13u5

Source reference: /affected/0/versions

Fixed versions
1:2.4.1+dfsg1-6+deb13u6

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

dovecot

Source reference: /affected/1/package/name

Affected versions
1:2.4.1+dfsg1-6

Source reference: /affected/1/versions

1:2.4.1+dfsg1-7

Source reference: /affected/1/versions

1:2.4.1+dfsg1-8

Source reference: /affected/1/versions

1:2.4.1+dfsg1-9

Source reference: /affected/1/versions

1:2.4.2+dfsg1-1

Source reference: /affected/1/versions

1:2.4.2+dfsg1-2

Source reference: /affected/1/versions

1:2.4.2+dfsg1-3

Source reference: /affected/1/versions

1:2.4.2+dfsg1-4

Source reference: /affected/1/versions

1:2.4.3+dfsg1-1

Source reference: /affected/1/versions

1:2.4.3+dfsg1-2

Source reference: /affected/1/versions

Fixed versions
1:2.4.4+dfsg1-1

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"
          },
          {
            "fixed": "1:2.4.1+dfsg1-6+deb13u6"
          }
        ]
      }
    ],
    "package": {
      "name": "dovecot",
      "purl": "pkg:deb/debian/dovecot?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1:2.4.1+dfsg1-6",
      "1:2.4.1+dfsg1-6+deb13u1",
      "1:2.4.1+dfsg1-6+deb13u2",
      "1:2.4.1+dfsg1-6+deb13u3",
      "1:2.4.1+dfsg1-6+deb13u4",
      "1:2.4.1+dfsg1-6+deb13u5"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27851.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:2.4.4+dfsg1-1"
          }
        ]
      }
    ],
    "package": {
      "name": "dovecot",
      "purl": "pkg:deb/debian/dovecot?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1:2.4.1+dfsg1-6",
      "1:2.4.1+dfsg1-7",
      "1:2.4.1+dfsg1-8",
      "1:2.4.1+dfsg1-9",
      "1:2.4.2+dfsg1-1",
      "1:2.4.2+dfsg1-2",
      "1:2.4.2+dfsg1-3",
      "1:2.4.2+dfsg1-4",
      "1:2.4.3+dfsg1-1",
      "1:2.4.3+dfsg1-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27851.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#56693 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-27851 · Revision 1Source updated