CVE-2026-110677

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Source
https://cve.org/CVERecord?id=CVE-2026-110677
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110677.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-110677
Downstream
AZL (1)
DEBIAN (1)
MGASA (1)
OESA (3)
openSUSE (2)
SUSE (1)
UBUNTU (1)
Related
openSUSE (2)
SUSE (1)
Published
2026-10-19T18:11:53Z
Modified
2026-11-01T17:27:07Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Cpanel::JSON::XS versions from 4.28 before 4.80 for Perl leak the array collecting duplicate key values under dupkeys_as_arrayref in decode_hv
Details

Cpanel::JSON::XS versions from 4.28 before 4.80 for Perl leak the array collecting duplicate key values under dupkeys_as_arrayref in decode_hv.

With dupkeys_as_arrayref, the values of a duplicate object key are collected into a new array. An extra reference is never released, so the array and every value in it outlive the decoded structure. The array also leaks when decoding fails after a duplicate key.

Repeatedly decoding untrusted JSON with a duplicate key holding a large value exhausts process memory.

Database specific 
{
    "cna_assigner": "CPANSec",
    "cwe_ids": [
        "CWE-401"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110677.json"
}
References

Affected packages

Git / github.com/rurban/cpanel-json-xs

Affected ranges

Type
GIT
Repo
https://github.com/rurban/cpanel-json-xs
Events
Introduced
4291b3aad686359bd6711b0da3e43c99a0a15d21
Fixed
5552a527abb648d9eb4134e91412800013ddecb9
Fixed
edb13030a708afc2cde0d2629fb6bdd31288ce6c
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "4.28"
                },
                {
                    "fixed": "4.80"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "fixed": "edb13030a708afc2cde0d2629fb6bdd31288ce6c"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

4.*
4.28
4.29
4.30
4.31
4.32
4.33
4.34
4.35
4.36
4.37
4.38
4.39
4.40
4.41
4.42
4.43
4.44
4.50
4.51
4.52
4.53

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110677.json"