AZL-109866

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Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109866.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-109866
Upstream
Published
2026-10-19T19:17:21Z
Modified
2026-10-23T14:17:03Z
Summary
CVE-2026-110680 affecting package perl-Cpanel-JSON-XS 4.39-1
Details

Cpanel::JSON::XS versions from 4.20 before 4.80 for Perl write out of bounds when a tied or shared hash grows during canonical encoding in encode_hv.

With canonical, the keys of a tied or threads::shared hash are counted before a second pass collects them for sorting. The encoder uses a fixed 64-entry stack array or, for larger counts, a heap array sized from the first pass. If the second pass exceeds that capacity, entries are written out of bounds before the counts are compared.

This corrupts stack or heap memory and can 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-109866.json"