CVE-2026-120646
CGI versions from 4.71 before 5.00 for Perl allow denial of service via a plain string dereferenced as a symbolic reference in uploadInfo
CGI versions from 4.71 before 5.00 for Perl allow denial of service via a plain string dereferenced as a symbolic reference in uploadInfo.
uploadInfo dereferences its argument and calls its filename method without checking that it is an upload filehandle. A plain string naming a defined global variable, such as the parameter value from ?upload=0, is treated as a symbolic reference, and the method call on it dies.
Exploit likelihood
What each source reports
CVE List No score
CGI versions from 4.71 before 5.00 for Perl allow denial of service via a plain string dereferenced as a symbolic reference in uploadInfo
CGI versions from 4.71 before 5.00 for Perl allow denial of service via a plain string dereferenced as a symbolic reference in uploadInfo.
uploadInfo dereferences its argument and calls its filename method without checking that it is an upload filehandle. A plain string naming a defined global variable, such as the parameter value from ?upload=0, is treated as a symbolic reference, and the method call on it dies.
- Record
CVE-2026-120646- Weakness
- CWE-843
- Updated
- 2026-11-04
EUVDEUVD-2026-116613 No score
CGI versions from 4.71 before 5.00 for Perl allow denial of service via a plain string dereferenced as a symbolic reference in uploadInfo.
uploadInfo dereferences its argument and calls its filename method without checking that it is an upload filehandle. A plain string naming a defined global variable, such as the parameter value from ?upload=0, is treated as a symbolic reference, and the method call on it dies.
- Record
EUVD-2026-116613- Updated
- 2026-11-04
GitHub AdvisoriesGHSA-qfrv-79gg-33h6 No score
CGI versions from 4.71 before 5.00 for Perl allow denial of service via a plain string...
CGI versions from 4.71 before 5.00 for Perl allow denial of service via a plain string dereferenced as a symbolic reference in uploadInfo.
uploadInfo dereferences its argument and calls its filename method without checking that it is an upload filehandle. A plain string naming a defined global variable, such as the parameter value from ?upload=0, is treated as a symbolic reference, and the method call on it dies.
- Record
GHSA-qfrv-79gg-33h6- Weakness
- CWE-843
- Updated
- 2026-11-04
NVD No score
CGI versions from 4.71 before 5.00 for Perl allow denial of service via a plain string dereferenced as a symbolic reference in uploadInfo.
uploadInfo dereferences its argument and calls its filename method without checking that it is an upload filehandle. A plain string naming a defined global variable, such as the parameter value from ?upload=0, is treated as a symbolic reference, and the method call on it dies.
- Record
CVE-2026-120646- Weakness
- CWE-843
- Updated
- 2026-11-04
OSV No score
CGI versions from 4.71 before 5.00 for Perl allow denial of service via a plain string dereferenced as a symbolic reference in uploadInfo
CGI versions from 4.71 before 5.00 for Perl allow denial of service via a plain string dereferenced as a symbolic reference in uploadInfo.
uploadInfo dereferences its argument and calls its filename method without checking that it is an upload filehandle. A plain string naming a defined global variable, such as the parameter value from ?upload=0, is treated as a symbolic reference, and the method call on it dies.
- Record
CVE-2026-120646- Weakness
- CWE-843
- Updated
- 2026-11-07
OSVDEBIAN-CVE-2026-120646 No score
CGI versions from 4.71 before 5.00 for Perl allow denial of service via a plain string dereferenced as a symbolic reference in uploadInfo. uploadInfo dereferences its argument and calls its filename method without checking that it is an upload filehandle. A plain string naming a defined global variable, such as the parameter value from ?upload=0, is treated as a symbolic reference, and the method call on it dies.
- Record
DEBIAN-CVE-2026-120646- Updated
- 2026-11-05
OSVopenSUSE-SU-2026:12465-1 No score
perl-CGI-5.20.0-1.1 on GA media
These are all security issues fixed in the perl-CGI-5.20.0-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:12465-1- Updated
- 2026-11-07
OSVUBUNTU-CVE-2026-120646 No score
CGI versions from 4.71 before 5.00 for Perl allow denial of service via a plain string dereferenced as a symbolic reference in uploadInfo. uploadInfo dereferences its argument and calls its filename method without checking that it is an upload filehandle. A plain string naming a defined global variable, such as the parameter value from ?upload=0, is treated as a symbolic reference, and the method call on it dies.
- Record
UBUNTU-CVE-2026-120646- Updated
- 2026-11-05
Affected packages
| Package | Affected | Fixed |
|---|---|---|
libcgi-pm-perlDebian:12 |
All versions, plus listed versions 4.55-14.57-14.59-14.60-14.61-1 Show 11 moreShow less4.62-14.63-14.64-14.65-14.66-14.67-14.68-14.70-14.71-14.72-15.02-1 |
None known |
libcgi-pm-perlDebian:13 |
All versions, plus listed versions 4.68-14.70-14.71-14.72-15.02-1 |
None known |
libcgi-pm-perlDebian:14 |
All versions, plus listed versions 4.68-14.70-14.71-14.72-15.02-1 |
None known |
libcgi-pm-perlUbuntu:16.04:LTS |
All versions, plus listed versions 4.21-14.22-14.25-14.26-1 |
None known |
libcgi-pm-perlUbuntu:18.04:LTS |
All versions, plus listed versions 4.36-14.37-14.38-1 |
None known |
libcgi-pm-perlUbuntu:20.04:LTS |
All versions, plus listed versions 4.44-14.45-14.46-1 |
None known |
libcgi-pm-perlUbuntu:22.04:LTS |
All versions, plus listed versions 4.51-14.53-14.54-1 |
None known |
libcgi-pm-perlUbuntu:24.04:LTS |
All versions, plus listed versions 4.57-14.60-14.61-14.62-14.63-1 |
None known |
libcgi-pm-perlUbuntu:26.10 |
All versions, plus listed versions 4.71-1build14.72-1 |
None known |
libcgi-pm-perlUbuntu:26.04:LTS |
All versions, plus listed versions 4.68-14.71-14.71-1build1 |
None known |
perl-CGIopenSUSE:Tumbleweed From an advisory covering 20 CVEs |
before 5.20.0-1.1 | 5.20.0-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| affected, aliases, references | NVD, OSV | |
| references | OSV | |
| affected, aliases, references | OSV | |
| aliases | EUVD, NVD | |
| first indexed | CVE List, GitHub Advisories |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-120646 is a vulnerability with no CVSS score yet in libcgi-pm-perl, published November 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. No source names a fixed version.
References
metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI.pm
metacpan.org/release/LEEJO/CGI-5.00/changes
github.com/leejo/CGI.pm/commit/a14a7decfdc18f2daf436d30df9b543e3f0f8da3.patch
nvd.nist.gov/vuln/detail/CVE-2026-120646
github.com/advisories/GHSA-qfrv-79gg-33h6
cpan.org/modules
Show 27 moreShow less
github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120646.json
github.com/leejo/CGI.pm
security-tracker.debian.org/tracker/CVE-2026-120646
ubuntu.com/security/CVE-2026-120646
cve.org/CVERecord?id=CVE-2026-120646
lists.security.metacpan.org/cve-announce/msg/44874987
github.com/leejo/CGI.pm/commit/a14a7decfdc18f2daf436d30df9b543e3f0f8da3
suse.com/security/cve/CVE-2026-120631
suse.com/security/cve/CVE-2026-120632
suse.com/security/cve/CVE-2026-120633
suse.com/security/cve/CVE-2026-120634
suse.com/security/cve/CVE-2026-120635
suse.com/security/cve/CVE-2026-120636
suse.com/security/cve/CVE-2026-120637
suse.com/security/cve/CVE-2026-120638
suse.com/security/cve/CVE-2026-120639
suse.com/security/cve/CVE-2026-120640
suse.com/security/cve/CVE-2026-120641
suse.com/security/cve/CVE-2026-120642
suse.com/security/cve/CVE-2026-120643
suse.com/security/cve/CVE-2026-120644
suse.com/security/cve/CVE-2026-120645
suse.com/security/cve/CVE-2026-120646
suse.com/security/cve/CVE-2026-120647
suse.com/security/cve/CVE-2026-120648
suse.com/security/cve/CVE-2026-120650
suse.com/security/cve/CVE-2026-120651