AZL-109869

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Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109869.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-109869
Upstream
Published
2026-10-19T19:17:21Z
Modified
2026-10-24T05:31:11Z
Summary
CVE-2026-110681 affecting package perl-Cpanel-JSON-XS 4.39-1
Details

Cpanel::JSON::XS versions before 4.80 for Perl use the parent interpreter's scalars from a parser object cloned into a new ithread.

A parser object holds its callbacks and its incremental parse buffer as raw scalar pointers. When a thread is created, these are copied into the new interpreter unchanged, so the child's parser uses, and later frees, scalars that belong to the parent and may already have been freed there.

A parser created before a thread starts and used inside it can call freed callbacks, corrupt reference counts and crash the process.

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-109869.json"