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DEBIAN-CVE-2026-54696

Type: advisorySource: OSV1 source record

Ruby JSON is a JSON implementation for Ruby. Versions 2.9.0 through 2.19.8 are vulnerable to heap buffer overflow when the JSON generator is provided with an oversized streamed object. When streaming to an IO JSON.dump(obj, io) and JSON::State#generate(obj, io) can write past the internal JSON generator buffer when a streamed object contains an attacker-controlled string near 16 KB. Exploitation would result in a reliable process crash/denial of service. This issue has been fixed in version 2.19.9.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-54696

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-2026-54696

ruby-json

Source reference: /affected/0/package/name

Affected versions
2.15.2+dfsg-1

Source reference: /affected/0/versions

2.18.1+dfsg-1

Source reference: /affected/0/versions

2.19.1+dfsg-1

Source reference: /affected/0/versions

2.19.2+dfsg-1

Source reference: /affected/0/versions

2.19.4+dfsg-1

Source reference: /affected/0/versions

2.19.9+dfsg-1

Source reference: /affected/0/versions

2.21.1+dfsg-1

Source reference: /affected/0/versions

2.21.2+dfsg-1

Source reference: /affected/0/versions

2.9.1+dfsg-1

Source reference: /affected/0/versions

3.0.2+dfsg-1

Source reference: /affected/0/versions

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

ruby-json

Source reference: /affected/1/package/name

Affected versions
2.15.2+dfsg-1

Source reference: /affected/1/versions

2.18.1+dfsg-1

Source reference: /affected/1/versions

2.19.1+dfsg-1

Source reference: /affected/1/versions

2.19.2+dfsg-1

Source reference: /affected/1/versions

2.19.4+dfsg-1

Source reference: /affected/1/versions

2.9.1+dfsg-1

Source reference: /affected/1/versions

Fixed versions
2.19.9+dfsg-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": "ruby-json",
      "purl": "pkg:deb/debian/ruby-json?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2.15.2+dfsg-1",
      "2.18.1+dfsg-1",
      "2.19.1+dfsg-1",
      "2.19.2+dfsg-1",
      "2.19.4+dfsg-1",
      "2.19.9+dfsg-1",
      "2.21.1+dfsg-1",
      "2.21.2+dfsg-1",
      "2.9.1+dfsg-1",
      "3.0.2+dfsg-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54696.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.19.9+dfsg-1"
          }
        ]
      }
    ],
    "package": {
      "name": "ruby-json",
      "purl": "pkg:deb/debian/ruby-json?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "2.15.2+dfsg-1",
      "2.18.1+dfsg-1",
      "2.19.1+dfsg-1",
      "2.19.2+dfsg-1",
      "2.19.4+dfsg-1",
      "2.9.1+dfsg-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54696.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57886 · Revision 1
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Publisher date
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