CVE-2026-110684

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Source
https://cve.org/CVERecord?id=CVE-2026-110684
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110684.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-110684
Downstream
Published
2026-10-19T18:12:13Z
Modified
2026-10-20T02:44:15Z
Summary
Cpanel::JSON::XS versions from 3.0202 before 4.80 for Perl leak memory and retain overloaded objects when encoding values as strings in encode_stringify
Details

Cpanel::JSON::XS versions from 3.0202 before 4.80 for Perl leak memory and retain overloaded objects when encoding values as strings in encode_stringify.

encode_stringify writes a value in its string form under allow_stringify, under convert_blessed for objects without TO_JSON, and under allow_bignum. For an array or hash object with a "" overload, and from 4.20 a scalar object, it takes an extra reference that is never released, so the object and everything it references are never freed. From 4.10 it also never frees its copy of the string.

Repeatedly encoding data that contains such values grows process memory without bound.

Database specific 
{
    "cna_assigner":  "CPANSec",
    "cwe_ids":  [
        "CWE-401"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110684.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
a8354e6aeb0c44c0bb346807f2ae5f7172321f5f
Fixed
5552a527abb648d9eb4134e91412800013ddecb9
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "3.0202"
        },
        {
            "fixed":  "4.80"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

3.*
3.0202
3.0204
3.0205
3.0206
3.0207
3.0208
3.0209
3.0210
3.0211
3.0212
3.0213
3.0213_01
3.0213_02
3.0214
3.0215
3.0216
3.0217
3.0217_01
3.0217_02
3.0217_03
3.0217_04
3.0217_05
3.0217_06
3.0218
3.0219
3.0220
3.0221
3.0222
3.0223
3.0224
3.0225
3.0226
3.0227
3.0229
3.0232
3.0233
3.0234
3.0235
3.0236
3.0237
3.0238
3.0239
3.0240
3.99_01
3.99_02
3.99_03
4.*
4.00
4.01
4.02
4.03
4.04
4.05
4.06
4.07
4.08
4.09
4.10
4.11
4.12
4.13
4.14
4.15
4.16
4.17
4.18
4.19
4.20
4.21
4.22
4.23
4.24
4.25
4.26
4.27
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-2026-110684.json"