CVE catalog
CVE-2026-110681
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 buffe
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.17% · Oct 27, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libcpanel-json-xs-perl | sid | 4.80-1 | fixed |
| Debian | libcpanel-json-xs-perl | forky | 4.80-1 | fixed |
| Debian | libcpanel-json-xs-perl | trixie | 4.39-2~deb13u1 | vulnerable |
| Debian | libcpanel-json-xs-perl | trixie-security | 4.39-2~deb13u1 | vulnerable |
| Debian | libcpanel-json-xs-perl | bookworm | 4.35-1+deb12u1 | vulnerable |
| Debian | libcpanel-json-xs-perl | bookworm-security | 4.35-1+deb12u1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 16.04 | 3.0115-1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 16.04 | 3.0210-1ubuntu1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 18.04 | 3.0225-1build1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 18.04 | 3.0239-1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 20.04 | 4.12-1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 20.04 | 4.12-1build1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 20.04 | 4.15-1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 20.04 | 4.17-1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 20.04 | 4.18-1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 20.04 | 4.19-1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 20.04 | 4.19-1build1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 20.04 | 4.19-1ubuntu0.1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 22.04 | 4.25-1build1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 22.04 | 4.25-1build2 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 22.04 | 4.27-1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 22.04 | 4.27-1build1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 22.04 | 4.27-1ubuntu0.1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 22.04 | 4.27-1ubuntu0.2 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 24.04 | 4.37-1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 24.04 | 4.37-1build1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 24.04 | 4.37-1build2 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 24.04 | 4.37-1build3 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 24.04 | 4.37-1ubuntu0.1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 26.10 | 4.40-1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 26.10 | 4.42-1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 26.10 | 4.42-1build1 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 26.04 | 4.39-2 | vulnerable |
| Ubuntu | libcpanel-json-xs-perl | 26.04 | 4.40-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libcpanel-json-xs-perl | source | sid | 4.80-1 | not yet assigned | Not reported | Not reported |
| Debian | libcpanel-json-xs-perl | source | forky | 4.80-1 | not yet assigned | Not reported | Not reported |
| Debian | libcpanel-json-xs-perl | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libcpanel-json-xs-perl | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libcpanel-json-xs-perl]Affected
Details (4)
4.35-1+deb12u1· amd64 · bookwormAffected
nvd · libcpanel-json-xs-perl · debian · bookworm; nvd · libcpanel-json-xs-perl · debian · 12
4.35-1+deb12u1· arm64 · bookwormAffected
nvd · libcpanel-json-xs-perl · debian · bookworm; nvd · libcpanel-json-xs-perl · debian · 12
4.35-1+deb12u1· amd64 · bookworm-securityAffected
nvd · libcpanel-json-xs-perl · debian · bookworm; nvd · libcpanel-json-xs-perl · debian · 12
4.35-1+deb12u1· arm64 · bookworm-securityAffected
nvd · libcpanel-json-xs-perl · debian · bookworm; nvd · libcpanel-json-xs-perl · debian · 12
[Debian 13 (Trixie)]
- [libcpanel-json-xs-perl]Affected
Details (4)
4.39-2~deb13u1· amd64 · trixieAffected
nvd · libcpanel-json-xs-perl · debian · 13
4.39-2~deb13u1· arm64 · trixieAffected
nvd · libcpanel-json-xs-perl · debian · 13
4.39-2~deb13u1· amd64 · trixie-securityAffected
nvd · libcpanel-json-xs-perl · debian · 13
4.39-2~deb13u1· arm64 · trixie-securityAffected
nvd · libcpanel-json-xs-perl · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_12217-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-110681]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-110681]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-110681]
- [https://security-tracker.debian.org/tracker/CVE-2026-110681]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-110681.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]