CVE catalog

CVE-2026-110674

Cpanel::JSON::XS versions from 4.33 before 4.80 for…

Cpanel::JSON::XS versions from 4.33 before 4.80 for Perl miss duplicate non-ASCII bare keys, allowing type confusion under dupkeys_as_arrayref in decode_hv. With allow_barekey, which relaxed enables, a bare key containing a non-ASCII byte is stored as UTF-8 but looked up as raw bytes, so a repeated key escapes the duplicate-key check and replaces the earlier value. From 4.41, under dupkeys_as_arrayref, a bare repeat replaces the array that collects a key's values with a plain value, and the next quoted repeat pushes onto that value as if it were an array. A JSON integer there is dereferenced as a pointer. Untrusted JSON decoded with relaxed and dupkeys_as_arrayref can crash the process or dereference an address chosen by a JSON number.

Severity: High · CVSS 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: Oct 19, 2026, 6:11:25 PM UTC
Updated: Oct 19, 2026, 7:17:21 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.20% · Oct 27, 2026

Projects and upstream resources

[libcpanel-json-xs-perl][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / release	Package	Version	Status	Source
Debiansid	libcpanel-json-xs-perl	`4.80-1`	FixedDistribution-reported fixed boundary	[CVE-2026-110674]
Debianforky	libcpanel-json-xs-perl	`4.80-1`	FixedDistribution-reported fixed boundary	[CVE-2026-110674]

Showing 2 fix observations. All 36 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
Debianbookworm	libcpanel-json-xs-perl	Not reported	AffectedDistribution reports no fix	[CVE-2026-110674]
Debianbookworm	libcpanel-json-xs-perl	`4.35-1+deb12u1`	Affected	[CVE-2026-110674]
Debianbookworm-security	libcpanel-json-xs-perl	`4.35-1+deb12u1`	Affected	[CVE-2026-110674]
Debianforky	libcpanel-json-xs-perl	`4.80-1`	FixedDistribution-reported fixed boundary	[CVE-2026-110674]
Debiansid	libcpanel-json-xs-perl	`4.80-1`	FixedDistribution-reported fixed boundary	[CVE-2026-110674]
Debiantrixie	libcpanel-json-xs-perl	Not reported	AffectedDistribution reports no fix	[CVE-2026-110674]
Debiantrixie	libcpanel-json-xs-perl	`4.39-2~deb13u1`	Affected	[CVE-2026-110674]
Debiantrixie-security	libcpanel-json-xs-perl	`4.39-2~deb13u1`	Affected	[CVE-2026-110674]
Ubuntu16.04	libcpanel-json-xs-perl	`3.0115-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu16.04	libcpanel-json-xs-perl	`3.0210-1ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu18.04	libcpanel-json-xs-perl	`3.0225-1build1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu18.04	libcpanel-json-xs-perl	`3.0239-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu20.04	libcpanel-json-xs-perl	`4.12-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu20.04	libcpanel-json-xs-perl	`4.12-1build1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu20.04	libcpanel-json-xs-perl	`4.15-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu20.04	libcpanel-json-xs-perl	`4.17-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu20.04	libcpanel-json-xs-perl	`4.18-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu20.04	libcpanel-json-xs-perl	`4.19-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu20.04	libcpanel-json-xs-perl	`4.19-1build1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu20.04	libcpanel-json-xs-perl	`4.19-1ubuntu0.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu22.04	libcpanel-json-xs-perl	`4.25-1build1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu22.04	libcpanel-json-xs-perl	`4.25-1build2`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu22.04	libcpanel-json-xs-perl	`4.27-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu22.04	libcpanel-json-xs-perl	`4.27-1build1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu22.04	libcpanel-json-xs-perl	`4.27-1ubuntu0.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu22.04	libcpanel-json-xs-perl	`4.27-1ubuntu0.2`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu24.04	libcpanel-json-xs-perl	`4.37-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu24.04	libcpanel-json-xs-perl	`4.37-1build1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu24.04	libcpanel-json-xs-perl	`4.37-1build2`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu24.04	libcpanel-json-xs-perl	`4.37-1build3`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu24.04	libcpanel-json-xs-perl	`4.37-1ubuntu0.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu26.04	libcpanel-json-xs-perl	`4.39-2`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu26.04	libcpanel-json-xs-perl	`4.40-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu26.10	libcpanel-json-xs-perl	`4.40-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu26.10	libcpanel-json-xs-perl	`4.42-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC
Ubuntu26.10	libcpanel-json-xs-perl	`4.42-1build1`	UnknownSource applicability is not established	[UBUNTU-CVE-2026-110674]Oct 28, 2026, 8:17:41 PM UTC

Original provider fields

{
  "package_releases": [
    {
      "name": "libcpanel-json-xs-perl",
      "status": "fixed",
      "release": "sid",
      "version": "4.80-1"
    },
    {
      "name": "libcpanel-json-xs-perl",
      "status": "fixed",
      "release": "forky",
      "version": "4.80-1"
    },
    {
      "name": "libcpanel-json-xs-perl",
      "status": "vulnerable",
      "release": "trixie",
      "version": "4.39-2~deb13u1"
    },
    {
      "name": "libcpanel-json-xs-perl",
      "status": "vulnerable",
      "release": "trixie-security",
      "version": "4.39-2~deb13u1"
    },
    {
      "name": "libcpanel-json-xs-perl",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "4.35-1+deb12u1"
    },
    {
      "name": "libcpanel-json-xs-perl",
      "status": "vulnerable",
      "release": "bookworm-security",
      "version": "4.35-1+deb12u1"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "libcpanel-json-xs-perl",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "4.80-1"
    },
    {
      "bug": null,
      "name": "libcpanel-json-xs-perl",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "4.80-1"
    },
    {
      "bug": null,
      "name": "libcpanel-json-xs-perl",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "libcpanel-json-xs-perl",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "libcpanel-json-xs-perl",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "16.04",
      "versions": [
        "3.0115-1",
        "3.0210-1ubuntu1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-110674",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2026-110674",
      "provider_updated_at": "2026-10-28T20:17:41.471336618Z",
      "applicability_unknown": true
    },
    {
      "name": "libcpanel-json-xs-perl",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "18.04",
      "versions": [
        "3.0225-1build1",
        "3.0239-1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-110674",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2026-110674",
      "provider_updated_at": "2026-10-28T20:17:41.471336618Z",
      "applicability_unknown": true
    },
    {
      "name": "libcpanel-json-xs-perl",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
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      ],
      "release": "20.04",
      "versions": [
        "4.12-1",
        "4.12-1build1",
        "4.15-1",
        "4.17-1",
        "4.18-1",
        "4.19-1",
        "4.19-1build1",
        "4.19-1ubuntu0.1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-110674",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2026-110674",
      "provider_updated_at": "2026-10-28T20:17:41.471336618Z",
      "applicability_unknown": true
    },
    {
      "name": "libcpanel-json-xs-perl",
      "distro": "ubuntu",
      "ranges": [
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      "release": "22.04",
      "versions": [
        "4.25-1build1",
        "4.25-1build2",
        "4.27-1",
        "4.27-1build1",
        "4.27-1ubuntu0.1",
        "4.27-1ubuntu0.2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-110674",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2026-110674",
      "provider_updated_at": "2026-10-28T20:17:41.471336618Z",
      "applicability_unknown": true
    },
    {
      "name": "libcpanel-json-xs-perl",
      "distro": "ubuntu",
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      "release": "24.04",
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        "4.37-1build3",
        "4.37-1ubuntu0.1"
      ],
      "ecosystem": "deb",
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      "fixed_version": "",
      "provider_source": "pypi",
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      "provider_updated_at": "2026-10-28T20:17:41.471336618Z",
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    },
    {
      "name": "libcpanel-json-xs-perl",
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          ]
        }
      ],
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        "4.42-1",
        "4.42-1build1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-110674",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2026-110674",
      "provider_updated_at": "2026-10-28T20:17:41.471336618Z",
      "applicability_unknown": true
    },
    {
      "name": "libcpanel-json-xs-perl",
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        {
          "type": "ECOSYSTEM",
          "events": [
            {
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            }
          ]
        }
      ],
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        "4.40-1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-110674",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2026-110674",
      "provider_updated_at": "2026-10-28T20:17:41.471336618Z",
      "applicability_unknown": true
    }
  ]
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libcpanel-json-xs-perl]Unknown
Details (4)
- 4.35-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · libcpanel-json-xs-perl · debian · bookworm; nvd · libcpanel-json-xs-perl · debian · 12
- 4.35-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · libcpanel-json-xs-perl · debian · bookworm; nvd · libcpanel-json-xs-perl · debian · 12
- 4.35-1+deb12u1 · amd64 · bookworm-security
  Affected
  nvd · libcpanel-json-xs-perl · debian · bookworm; nvd · libcpanel-json-xs-perl · debian · 12
- 4.35-1+deb12u1 · arm64 · bookworm-security
  Affected
  nvd · libcpanel-json-xs-perl · debian · bookworm; nvd · libcpanel-json-xs-perl · debian · 12

[Debian 13 (Trixie)]

[libcpanel-json-xs-perl]Unknown
Details (4)
- 4.39-2~deb13u1 · amd64 · trixie
  Affected
  nvd · libcpanel-json-xs-perl · debian · 13
- 4.39-2~deb13u1 · arm64 · trixie
  Affected
  nvd · libcpanel-json-xs-perl · debian · 13
- 4.39-2~deb13u1 · amd64 · trixie-security
  Affected
  nvd · libcpanel-json-xs-perl · debian · 13
- 4.39-2~deb13u1 · arm64 · trixie-security
  Affected
  nvd · libcpanel-json-xs-perl · debian · 13

Observed: Oct 27, 2026, 4:09:06 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]