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CVE-2026-120647

CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename

No score

CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename.

header(-attachment => $name) writes $name into the quoted filename parameter of Content-Disposition without escaping double quotes.

An application that passes request data as the attachment name can be made to send a second filename parameter, changing the name the response is saved under.

Exploit likelihood

0.21%Unchanged since Nov 4, 2026
90%50%10%1%

What each source reports

CVE List No score

CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename

CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename.

header(-attachment => $name) writes $name into the quoted filename parameter of Content-Disposition without escaping double quotes.

An application that passes request data as the attachment name can be made to send a second filename parameter, changing the name the response is saved under.

Record
CVE-2026-120647
Weakness
CWE-116
Updated
2026-11-04
EUVDEUVD-2026-116614 No score

CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename.

header(-attachment => $name) writes $name into the quoted filename parameter of Content-Disposition without escaping double quotes.

An application that passes request data as the attachment name can be made to send a second filename parameter, changing the name the response is saved under.

Record
EUVD-2026-116614
Updated
2026-11-04
GitHub AdvisoriesGHSA-599q-wvvm-v4wp No score

CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped...

CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename.

header(-attachment => $name) writes $name into the quoted filename parameter of Content-Disposition without escaping double quotes.

An application that passes request data as the attachment name can be made to send a second filename parameter, changing the name the response is saved under.

Record
GHSA-599q-wvvm-v4wp
Weakness
CWE-116
Updated
2026-11-04
NVD No score

CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename.

header(-attachment => $name) writes $name into the quoted filename parameter of Content-Disposition without escaping double quotes.

An application that passes request data as the attachment name can be made to send a second filename parameter, changing the name the response is saved under.

Record
CVE-2026-120647
Weakness
CWE-116
Updated
2026-11-04
OSVAZL-112780 No score

CVE-2026-120647 affecting package perl-CGI 4.60-1

CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename.

header(-attachment => $name) writes $name into the quoted filename parameter of Content-Disposition without escaping double quotes.

An application that passes request data as the attachment name can be made to send a second filename parameter, changing the name the response is saved under.

Record
AZL-112780
Updated
2026-11-07
OSV No score

CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename

CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename.

header(-attachment => $name) writes $name into the quoted filename parameter of Content-Disposition without escaping double quotes.

An application that passes request data as the attachment name can be made to send a second filename parameter, changing the name the response is saved under.

Record
CVE-2026-120647
Weakness
CWE-116
Updated
2026-11-07
OSVDEBIAN-CVE-2026-120647 No score

CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename. header(-attachment => $name) writes $name into the quoted filename parameter of Content-Disposition without escaping double quotes. An application that passes request data as the attachment name can be made to send a second filename parameter, changing the name the response is saved under.

Record
DEBIAN-CVE-2026-120647
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-2026-120647 No score

CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename. header(-attachment => $name) writes $name into the quoted filename parameter of Content-Disposition without escaping double quotes. An application that passes request data as the attachment name can be made to send a second filename parameter, changing the name the response is saved under.

Record
UBUNTU-CVE-2026-120647
Updated
2026-11-05

Affected packages

Affected packages
PackageAffectedFixed
perl-CGI
Azure Linux:3
through 4.60-1 None known
libcgi-pm-perl
Debian:12
All versions, plus listed versions
4.55-14.57-14.59-14.60-14.61-1
Show 11 moreShow less
4.62-14.63-14.64-14.65-14.66-14.67-14.68-14.70-14.71-14.72-15.02-1
None known
libcgi-pm-perl
Debian:13
All versions, plus listed versions
4.68-14.70-14.71-14.72-15.02-1
None known
libcgi-pm-perl
Debian:14
All versions, plus listed versions
4.68-14.70-14.71-14.72-15.02-1
None known
libcgi-pm-perl
Ubuntu:16.04:LTS
All versions, plus listed versions
4.21-14.22-14.25-14.26-1
None known
libcgi-pm-perl
Ubuntu:18.04:LTS
All versions, plus listed versions
4.36-14.37-14.38-1
None known
libcgi-pm-perl
Ubuntu:20.04:LTS
All versions, plus listed versions
4.44-14.45-14.46-1
None known
libcgi-pm-perl
Ubuntu:22.04:LTS
All versions, plus listed versions
4.51-14.53-14.54-1
None known
libcgi-pm-perl
Ubuntu:24.04:LTS
All versions, plus listed versions
4.57-14.60-14.61-14.62-14.63-1
None known
libcgi-pm-perl
Ubuntu:26.10
All versions, plus listed versions
4.71-1build14.72-1
None known
libcgi-pm-perl
Ubuntu:26.04:LTS
All versions, plus listed versions
4.68-14.71-14.71-1build1
None known
perl-CGI
openSUSE:Tumbleweed
From an advisory covering 20 CVEs
before 5.20.0-1.1
5.20.0-1.1

History

History
RecordedChangedSources
affected, aliases, referencesOSV
affected, aliases, referencesOSV
affected, aliases, referencesNVD, OSV
referencesOSV
affected, aliases, referencesOSV
aliasesEUVD, NVD
first indexedCVE List, GitHub Advisories

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-120647 is a vulnerability with no CVSS score yet in perl-CGI, published November 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 10th percentile. No source names a fixed version.

References

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