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DEBIAN-CVE-2026-27206

Type: advisorySource: OSV1 source record

Zumba Json Serializer is a library to serialize PHP variables in JSON format. In versions 3.2.2 and below, the library allows deserialization of PHP objects from JSON using a special @type field. The deserializer instantiates any class specified in the @type field without restriction. When processing untrusted JSON input, this behavior may allow an attacker to instantiate arbitrary classes available in the application. If a vulnerable application passes attacker-controlled JSON into JsonSerializer::unserialize() and contains classes with dangerous magic methods (such as __wakeup() or __destruct()), this may lead to PHP Object Injection and potentially Remote Code Execution (RCE), depending on available gadget chains in the application or its dependencies. This behavior is similar in risk profile to PHP's native unserialize() when used without the allowed_classes restriction. Applications are impacted only if untrusted or attacker-controlled JSON is passed into JsonSerializer::unserialize() and the application or its dependencies contain classes that can be leveraged as a gadget chain. This issue has been fixed in version 3.2.3. If an immediate upgrade isn't feasible, mitigate the vulnerability by never deserializing untrusted JSON with JsonSerializer::unserialize(), validating and sanitizing all JSON input before deserialization, and disabling @type-based object instantiation wherever possible.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-27206

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-2026-27206

php-zumba-json-serializer

Source reference: /affected/0/package/name

Affected versions
3.0.2-1

Source reference: /affected/0/versions

3.0.2-2

Source reference: /affected/0/versions

3.2.0-1

Source reference: /affected/0/versions

3.2.1-1

Source reference: /affected/0/versions

3.2.2-1

Source reference: /affected/0/versions

3.2.4-1

Source reference: /affected/0/versions

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

php-zumba-json-serializer

Source reference: /affected/1/package/name

Affected versions
3.2.2-1

Source reference: /affected/1/versions

3.2.4-1

Source reference: /affected/1/versions

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

php-zumba-json-serializer

Source reference: /affected/2/package/name

Affected versions
3.2.2-1

Source reference: /affected/2/versions

Fixed versions
3.2.4-1

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": "php-zumba-json-serializer",
      "purl": "pkg:deb/debian/php-zumba-json-serializer?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "3.0.2-1",
      "3.0.2-2",
      "3.2.0-1",
      "3.2.1-1",
      "3.2.2-1",
      "3.2.4-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27206.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "php-zumba-json-serializer",
      "purl": "pkg:deb/debian/php-zumba-json-serializer?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "3.2.2-1",
      "3.2.4-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27206.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.2.4-1"
          }
        ]
      }
    ],
    "package": {
      "name": "php-zumba-json-serializer",
      "purl": "pkg:deb/debian/php-zumba-json-serializer?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "3.2.2-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27206.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#56311 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-27206 · Revision 1Source updated