UnratedFix available

DEBIAN-CVE-2026-63771

Type: advisorySource: OSV1 source record

Adminer before 5.4.3 contains a cookie injection vulnerability that allows attackers to manipulate cookie attributes by injecting arbitrary values through the unsanitized X-Forwarded-Prefix HTTP header used in Set-Cookie path attributes. Attackers can exploit a misconfigured reverse proxy to downgrade SameSite protection and enable cross-origin authenticated requests, bypassing cookie security controls.

Announced 20 Jul 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-63771

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-2026-63771

adminer

Source reference: /affected/0/package/name

Affected versions: 4.8.1-1
Source reference: /affected/0/versions
4.8.1-2
Source reference: /affected/0/versions
4.8.1-4
Source reference: /affected/0/versions
5.1.0-1
Source reference: /affected/0/versions
5.2.1+dfsg-1
Source reference: /affected/0/versions
5.3.0+dfsg-1
Source reference: /affected/0/versions
5.4.0+dfsg-1
Source reference: /affected/0/versions
5.4.1+dfsg-1
Source reference: /affected/0/versions
5.4.2+dfsg-1
Source reference: /affected/0/versions
5.4.3+dfsg-1
Source reference: /affected/0/versions
5.4.4+dfsg-1
Source reference: /affected/0/versions
6.0.0-1
Source reference: /affected/0/versions
6.0.1-1
Source reference: /affected/0/versions
6.0.2-1
Source reference: /affected/0/versions
6.1.0-1
Source reference: /affected/0/versions
6.1.1-1
Source reference: /affected/0/versions
6.1.2-1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

adminer

Source reference: /affected/1/package/name

Affected versions: 5.2.1+dfsg-1
Source reference: /affected/1/versions
5.3.0+dfsg-1
Source reference: /affected/1/versions
5.4.0+dfsg-1
Source reference: /affected/1/versions
5.4.1+dfsg-1
Source reference: /affected/1/versions
5.4.2+dfsg-1
Source reference: /affected/1/versions
5.4.3+dfsg-1
Source reference: /affected/1/versions
5.4.4+dfsg-1
Source reference: /affected/1/versions
6.0.0-1
Source reference: /affected/1/versions
6.0.1-1
Source reference: /affected/1/versions
6.0.2-1
Source reference: /affected/1/versions
6.1.0-1
Source reference: /affected/1/versions
6.1.1-1
Source reference: /affected/1/versions
6.1.2-1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

adminer

Source reference: /affected/2/package/name

Affected versions: 5.2.1+dfsg-1
Source reference: /affected/2/versions
5.3.0+dfsg-1
Source reference: /affected/2/versions
5.4.0+dfsg-1
Source reference: /affected/2/versions
5.4.1+dfsg-1
Source reference: /affected/2/versions
5.4.2+dfsg-1
Source reference: /affected/2/versions
Fixed versions: 5.4.3+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"
          }
        ]
      }
    ],
    "package": {
      "name": "adminer",
      "purl": "pkg:deb/debian/adminer?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "4.8.1-1",
      "4.8.1-2",
      "4.8.1-4",
      "5.1.0-1",
      "5.2.1+dfsg-1",
      "5.3.0+dfsg-1",
      "5.4.0+dfsg-1",
      "5.4.1+dfsg-1",
      "5.4.2+dfsg-1",
      "5.4.3+dfsg-1",
      "5.4.4+dfsg-1",
      "6.0.0-1",
      "6.0.1-1",
      "6.0.2-1",
      "6.1.0-1",
      "6.1.1-1",
      "6.1.2-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-63771.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "adminer",
      "purl": "pkg:deb/debian/adminer?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "5.2.1+dfsg-1",
      "5.3.0+dfsg-1",
      "5.4.0+dfsg-1",
      "5.4.1+dfsg-1",
      "5.4.2+dfsg-1",
      "5.4.3+dfsg-1",
      "5.4.4+dfsg-1",
      "6.0.0-1",
      "6.0.1-1",
      "6.0.2-1",
      "6.1.0-1",
      "6.1.1-1",
      "6.1.2-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-63771.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "5.4.3+dfsg-1"
          }
        ]
      }
    ],
    "package": {
      "name": "adminer",
      "purl": "pkg:deb/debian/adminer?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "5.2.1+dfsg-1",
      "5.3.0+dfsg-1",
      "5.4.0+dfsg-1",
      "5.4.1+dfsg-1",
      "5.4.2+dfsg-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-63771.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #58125 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 17:38:31 GMT
Publisher date: Mon, 20 Jul 2026 19:17:29 GMT

Read the original announcement

Revision history

25 Oct 2026DEBIAN-CVE-2026-63771 · Revision 1Source updated