ubuntu-cve-2026-54696
Vulnerability from osv_ubuntu
Published
2026-06-30 23:17
Modified
2026-07-06 14:14
Summary
Details
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.
Severity
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jruby",
"binary_version": "1.5.6-9+deb8u2build0.14.04.1~esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "jruby",
"purl": "pkg:deb/ubuntu/jruby@1.5.6-9+deb8u2build0.14.04.1~esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.5.6-5ubuntu1",
"1.5.6-6",
"1.5.6-7",
"1.5.6-9+deb8u2build0.14.04.1~esm2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-json",
"binary_version": "1.8.0-1build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "ruby-json",
"purl": "pkg:deb/ubuntu/ruby-json@1.8.0-1build1?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.8.0-1",
"1.8.0-1build1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libruby2.3",
"binary_version": "2.3.1-2~ubuntu16.04.16+esm14"
},
{
"binary_name": "ruby2.3",
"binary_version": "2.3.1-2~ubuntu16.04.16+esm14"
},
{
"binary_name": "ruby2.3-tcltk",
"binary_version": "2.3.1-2~ubuntu16.04.16+esm14"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "ruby2.3",
"purl": "pkg:deb/ubuntu/ruby2.3@2.3.1-2~ubuntu16.04.16+esm14?arch=source\u0026distro=esm-infra-legacy/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.3.0-1",
"2.3.0-2",
"2.3.0-4ubuntu2",
"2.3.0-4ubuntu3",
"2.3.0-5ubuntu1",
"2.3.1-2~16.04",
"2.3.1-2~16.04.2",
"2.3.1-2~16.04.4",
"2.3.1-2~16.04.5",
"2.3.1-2~16.04.6",
"2.3.1-2~16.04.7",
"2.3.1-2~16.04.9",
"2.3.1-2~16.04.10",
"2.3.1-2~16.04.11",
"2.3.1-2~16.04.12",
"2.3.1-2~ubuntu16.04.13",
"2.3.1-2~ubuntu16.04.14",
"2.3.1-2~ubuntu16.04.15",
"2.3.1-2~ubuntu16.04.16",
"2.3.1-2~ubuntu16.04.16+esm1",
"2.3.1-2~ubuntu16.04.16+esm2",
"2.3.1-2~ubuntu16.04.16+esm3",
"2.3.1-2~ubuntu16.04.16+esm4",
"2.3.1-2~ubuntu16.04.16+esm5",
"2.3.1-2~ubuntu16.04.16+esm6",
"2.3.1-2~ubuntu16.04.16+esm7",
"2.3.1-2~ubuntu16.04.16+esm8",
"2.3.1-2~ubuntu16.04.16+esm9",
"2.3.1-2~ubuntu16.04.16+esm10",
"2.3.1-2~ubuntu16.04.16+esm11",
"2.3.1-2~ubuntu16.04.16+esm12",
"2.3.1-2~ubuntu16.04.16+esm14"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jruby",
"binary_version": "1.7.22-1ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "jruby",
"purl": "pkg:deb/ubuntu/jruby@1.7.22-1ubuntu1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.7.21-2ubuntu4",
"1.7.22-1ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-json",
"binary_version": "1.8.3-1build4"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "ruby-json",
"purl": "pkg:deb/ubuntu/ruby-json@1.8.3-1build4?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.8.3-1build1",
"1.8.3-1build2",
"1.8.3-1build4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libruby2.5",
"binary_version": "2.5.1-1ubuntu1.16+esm8"
},
{
"binary_name": "ruby2.5",
"binary_version": "2.5.1-1ubuntu1.16+esm8"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "ruby2.5",
"purl": "pkg:deb/ubuntu/ruby2.5@2.5.1-1ubuntu1.16+esm8?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.5.0~preview1-1ubuntu2",
"2.5.0-4ubuntu1",
"2.5.0-4ubuntu4",
"2.5.0-5ubuntu1",
"2.5.0-6ubuntu1",
"2.5.1-1ubuntu1",
"2.5.1-1ubuntu1.1",
"2.5.1-1ubuntu1.2",
"2.5.1-1ubuntu1.4",
"2.5.1-1ubuntu1.5",
"2.5.1-1ubuntu1.6",
"2.5.1-1ubuntu1.7",
"2.5.1-1ubuntu1.8",
"2.5.1-1ubuntu1.9",
"2.5.1-1ubuntu1.10",
"2.5.1-1ubuntu1.11",
"2.5.1-1ubuntu1.12",
"2.5.1-1ubuntu1.13",
"2.5.1-1ubuntu1.14",
"2.5.1-1ubuntu1.15",
"2.5.1-1ubuntu1.16",
"2.5.1-1ubuntu1.16+esm1",
"2.5.1-1ubuntu1.16+esm3",
"2.5.1-1ubuntu1.16+esm4",
"2.5.1-1ubuntu1.16+esm5",
"2.5.1-1ubuntu1.16+esm6",
"2.5.1-1ubuntu1.16+esm7",
"2.5.1-1ubuntu1.16+esm8"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jruby",
"binary_version": "9.1.17.0-1~18.04"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "jruby",
"purl": "pkg:deb/ubuntu/jruby@9.1.17.0-1~18.04?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"9.1.13.0-1",
"9.1.17.0-1~18.04"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-json",
"binary_version": "2.1.0+dfsg-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "ruby-json",
"purl": "pkg:deb/ubuntu/ruby-json@2.1.0+dfsg-2?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.0+dfsg-1",
"2.1.0+dfsg-1ubuntu2",
"2.1.0+dfsg-1ubuntu3",
"2.1.0+dfsg-2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libruby2.7",
"binary_version": "2.7.0-5ubuntu1.18+esm5"
},
{
"binary_name": "ruby2.7",
"binary_version": "2.7.0-5ubuntu1.18+esm5"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "ruby2.7",
"purl": "pkg:deb/ubuntu/ruby2.7@2.7.0-5ubuntu1.18+esm5?arch=source\u0026distro=esm-infra/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.7.0-1",
"2.7.0-2",
"2.7.0-3",
"2.7.0-4",
"2.7.0-4ubuntu1",
"2.7.0-5ubuntu1",
"2.7.0-5ubuntu1.1",
"2.7.0-5ubuntu1.2",
"2.7.0-5ubuntu1.3",
"2.7.0-5ubuntu1.4",
"2.7.0-5ubuntu1.5",
"2.7.0-5ubuntu1.6",
"2.7.0-5ubuntu1.7",
"2.7.0-5ubuntu1.8",
"2.7.0-5ubuntu1.9",
"2.7.0-5ubuntu1.10",
"2.7.0-5ubuntu1.11",
"2.7.0-5ubuntu1.12",
"2.7.0-5ubuntu1.13",
"2.7.0-5ubuntu1.14",
"2.7.0-5ubuntu1.15",
"2.7.0-5ubuntu1.16",
"2.7.0-5ubuntu1.17",
"2.7.0-5ubuntu1.18",
"2.7.0-5ubuntu1.18+esm1",
"2.7.0-5ubuntu1.18+esm3",
"2.7.0-5ubuntu1.18+esm4",
"2.7.0-5ubuntu1.18+esm5"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jruby",
"binary_version": "9.1.17.0-3build6"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "jruby",
"purl": "pkg:deb/ubuntu/jruby@9.1.17.0-3build6?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"9.1.17.0-3",
"9.1.17.0-3build5",
"9.1.17.0-3build6"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-json",
"binary_version": "2.3.0+dfsg-1build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "ruby-json",
"purl": "pkg:deb/ubuntu/ruby-json@2.3.0+dfsg-1build1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.0+dfsg-2",
"2.3.0+dfsg-1",
"2.3.0+dfsg-1build1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-json",
"binary_version": "2.5.1+dfsg-2build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "ruby-json",
"purl": "pkg:deb/ubuntu/ruby-json@2.5.1+dfsg-2build1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.3.0+dfsg-1build1",
"2.5.1+dfsg-2",
"2.5.1+dfsg-2build1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libruby3.0",
"binary_version": "3.0.2-7ubuntu2.13"
},
{
"binary_name": "ruby3.0",
"binary_version": "3.0.2-7ubuntu2.13"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "ruby3.0",
"purl": "pkg:deb/ubuntu/ruby3.0@3.0.2-7ubuntu2.13?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.0.2-5ubuntu1",
"3.0.2-7",
"3.0.2-7ubuntu2",
"3.0.2-7ubuntu2.1",
"3.0.2-7ubuntu2.2",
"3.0.2-7ubuntu2.3",
"3.0.2-7ubuntu2.4",
"3.0.2-7ubuntu2.5",
"3.0.2-7ubuntu2.6",
"3.0.2-7ubuntu2.7",
"3.0.2-7ubuntu2.8",
"3.0.2-7ubuntu2.10",
"3.0.2-7ubuntu2.11",
"3.0.2-7ubuntu2.12",
"3.0.2-7ubuntu2.13"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jruby",
"binary_version": "9.4.6.0+ds-1ubuntu3"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "jruby",
"purl": "pkg:deb/ubuntu/jruby@9.4.6.0+ds-1ubuntu3?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"9.3.9.0+ds-1",
"9.4.5.0+ds-1",
"9.4.5.0+ds-1ubuntu1",
"9.4.6.0+ds-1ubuntu3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-json",
"binary_version": "2.6.3+dfsg-1build4"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "ruby-json",
"purl": "pkg:deb/ubuntu/ruby-json@2.6.3+dfsg-1build4?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.6.3+dfsg-1build2",
"2.6.3+dfsg-1build3",
"2.6.3+dfsg-1build4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libruby3.2",
"binary_version": "3.2.3-1ubuntu0.24.04.8"
},
{
"binary_name": "ruby3.2",
"binary_version": "3.2.3-1ubuntu0.24.04.8"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "ruby3.2",
"purl": "pkg:deb/ubuntu/ruby3.2@3.2.3-1ubuntu0.24.04.8?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.2.3-1",
"3.2.3-1build2",
"3.2.3-1build3",
"3.2.3-1ubuntu0.24.04.1",
"3.2.3-1ubuntu0.24.04.3",
"3.2.3-1ubuntu0.24.04.5",
"3.2.3-1ubuntu0.24.04.6",
"3.2.3-1ubuntu0.24.04.7",
"3.2.3-1ubuntu0.24.04.8"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jruby",
"binary_version": "9.4.8.0+ds-3ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "jruby",
"purl": "pkg:deb/ubuntu/jruby@9.4.8.0+ds-3ubuntu1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"9.4.8.0+ds-2ubuntu1",
"9.4.8.0+ds-3ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-json",
"binary_version": "2.9.1+dfsg-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "ruby-json",
"purl": "pkg:deb/ubuntu/ruby-json@2.9.1+dfsg-1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.9.1+dfsg-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libruby3.3",
"binary_version": "3.3.8-2ubuntu2.1"
},
{
"binary_name": "ruby3.3",
"binary_version": "3.3.8-2ubuntu2.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "ruby3.3",
"purl": "pkg:deb/ubuntu/ruby3.3@3.3.8-2ubuntu2.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.3.7-1ubuntu2",
"3.3.8-2ubuntu1",
"3.3.8-2ubuntu2",
"3.3.8-2ubuntu2.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jruby",
"binary_version": "9.4.8.0+ds-3ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "jruby",
"purl": "pkg:deb/ubuntu/jruby@9.4.8.0+ds-3ubuntu1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"9.4.8.0+ds-3ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-json",
"binary_version": "2.18.1+dfsg-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "ruby-json",
"purl": "pkg:deb/ubuntu/ruby-json@2.18.1+dfsg-1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.9.1+dfsg-1",
"2.15.2+dfsg-1",
"2.18.1+dfsg-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libruby3.3",
"binary_version": "3.3.8-2ubuntu3.1"
},
{
"binary_name": "ruby3.3",
"binary_version": "3.3.8-2ubuntu3.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "ruby3.3",
"purl": "pkg:deb/ubuntu/ruby3.3@3.3.8-2ubuntu3.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.3.8-2ubuntu2",
"3.3.8-2ubuntu3",
"3.3.8-2ubuntu3.1"
]
}
],
"aliases": [],
"details": "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.",
"id": "UBUNTU-CVE-2026-54696",
"modified": "2026-07-06T14:14:50Z",
"published": "2026-06-30T23:17:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-54696"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-54696"
},
{
"type": "REPORT",
"url": "https://github.com/ruby/json/releases/tag/v2.19.9"
},
{
"type": "REPORT",
"url": "https://github.com/ruby/json/security/advisories/GHSA-x2f5-4prf-w687"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-54696"
]
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…