CVE-2020-12723 @ Library

"CVE-2020-12723"
"perl-5.24.1-3+deb9u7"
"perl-base-5.24.1-3+deb9u7"
"perl-modules-5.20.2-3+deb8u9"
"perl-modules-5.24-5.24.1-3+deb9u7"
"libbit-vector-perl-7.4-1+b2"
"libcarp-clan-perl-6.06-1"
"libcgi-fast-perl-1:2.12-1"
"libcgi-pm-perl-4.35-1"
"libconfig-inifiles-perl-2.94-1"
"libdate-calc-perl-6.4-1"
"libdate-calc-xs-perl-6.4-1+b2"
"libdate-manip-perl-6.57-1"
"libdbd-mysql-perl-4.041-2"
"libdbi-perl-1.636-1+deb9u2"
"libencode-locale-perl-1.05-1"
"liberror-perl-0.17024-1"
"Am I vulnerable?"

Status

new

Priority

1.75

Match score

4.0

Risk

DoS Remote

CVSS

7.5 HIGH

Reason

cpe: perl; pkgs: perl; version: in-range: perl-5.24.1-3+deb9u7, perl-base-5.24.1-3+deb9u7, perl-modules-5.20.2-3+deb8u9, perl-modules-5.24-5.24.1-3+deb9u7; risk:dos

Created

2026-10-15T10:20:43Z

Updated

2026-10-20T10:18:51Z

Package interrogation (copy)

Run on the host — click to copy a command. Debian/apt

Package	Commands
perl-5.24.1-3+deb9u7
perl-base-5.24.1-3+deb9u7
perl-modules-5.20.2-3+deb8u9
perl-modules-5.24-5.24.1-3+deb9u7
libbit-vector-perl-7.4-1+b2
libcarp-clan-perl-6.06-1
libcgi-fast-perl-1:2.12-1
libcgi-pm-perl-4.35-1
libconfig-inifiles-perl-2.94-1
libdate-calc-perl-6.4-1
libdate-calc-xs-perl-6.4-1+b2
libdate-manip-perl-6.57-1
libdbd-mysql-perl-4.041-2
libdbi-perl-1.636-1+deb9u2
libencode-locale-perl-1.05-1
liberror-perl-0.17024-1
libfcgi-perl-0.78-2
libfile-copy-recursive-perl-0.38-1
libfile-tail-perl-1.3-2
libhtml-parser-perl-3.72-3
libhtml-tagset-perl-3.20-3
libhtml-template-perl-2.95-2
libhttp-date-perl-6.02-1
libhttp-message-perl-6.11-1
libio-html-perl-1.001-1
liblocale-gettext-perl-1.07-3+b1
liblwp-mediatypes-perl-6.02-1
libmodule-build-perl-0.422000-1
libperl5.24-5.24.1-3+deb9u7
libpod-latex-perl-0.61-2
libterm-readkey-perl-2.37-1
libtext-charwidth-perl-0.04-7+b5
libtext-iconv-perl-1.7-5+b4
libtext-wrapi18n-perl-0.06-7.1

Inventory lookup

Search package inventory across systems, then return here. Create a ticket on systems the matcher missed.

Suggestions: perl · perl-base · perl-modules

System	Matches	Ticket for CVE-2020-12723
Archive	perl-base 5.28.1-6+deb10u1	new open
Janus	perl-base 5.28.1-6+deb10u1	new open
Library	perl-base 5.24.1-3+deb9u7	new open
Saiph	perl-base 5.28.1-6+deb10u1	new open
Bullseye	perl-base 5.32.1-4+deb11u5	none
Helios	perl-base 5.32.1-4+deb11u5	none
Matrix	perl-base 5.36.0-7+deb12u4	none
Silk	perl-base 5.36.0-7+deb12u4	none

Related CVE (same fix)

Point this ticket’s CVE at a higher-priority / same-fix primary so you only triage one.

Host OS / kernel

Debian GNU/Linux 9 (stretch) (9) · debian

Arch

x86_64

kernel_release

uname -r → 4.9.0-19-amd64

kernel_version

uname -v → #1 SMP Debian 4.9.320-2 (2022-06-30)

For Linux kernel CVEs, kernel_version (Debian packaging / build string) often decides fixed vs not; kernel_release is used for upstream NVD range compares.

Same CVE on other hosts

Open the ticket for this CVE on another system.

System	Status	Priority	Updated
morris	new	7.0	2026-10-20T10:18:51Z	Open
mufasa	new	7.0	2026-10-20T10:18:51Z	Open
Archive	new	0.62	2026-10-20T10:18:51Z	Open
Janus	new	0.62	2026-10-20T10:18:51Z	Open
Saiph	new	0.62	2026-10-20T10:18:51Z	Open

Description

regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.

Update status

Add note only

References

NVD: CVE-2020-12723