AZL-109863

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Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109863.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-109863
Upstream
Published
2026-10-19T19:17:21Z
Modified
2026-10-30T05:32:16Z
Summary
CVE-2026-110677 affecting package perl-Cpanel-JSON-XS 4.39-1
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.

References

Affected packages

Azure Linux:3 / perl-Cpanel-JSON-XS

Package

Name
perl-Cpanel-JSON-XS
Purl
pkg:rpm/azure-linux/perl-Cpanel-JSON-XS

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Last Affected
4.39-1

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109863.json"