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Vulnerability record · CVE-2020-12723 · published 5 June 2020

CVE-2020-12723: Perl classic buffer overflow vulnerability

Perl · Perl

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

7.5 CVSS 3.1 High EPSS 6.0% · top 7.0% CWE-120 · Classic buffer overflow
7.5CVSS 3.1 base score, v2 5.0
6.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
16Affected product versions listed by NVD
32References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

16 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00044.html Mailing ListThird Party Advisory
https://github.com/Perl/perl5/blob/blead/pod/perl5303delta.pod Third Party Advisory
https://github.com/Perl/perl5/compare/v5.30.2...v5.30.3 PatchThird Party Advisory
https://github.com/Perl/perl5/issues/16947 Third Party Advisory
https://github.com/Perl/perl5/issues/17743 Third Party Advisory
https://github.com/perl/perl5/commit/66bbb51b93253a3f87d11c2695cfb7bdb782184a PatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IN3TTBO5KSGWE5IRIKDJ5JS
https://security.gentoo.org/glsa/202006-03 Third Party Advisory
https://security.netapp.com/advisory/ntap-20200611-0001/ Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujan2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuoct2020.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html PatchThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00044.html Mailing ListThird Party Advisory
https://github.com/Perl/perl5/blob/blead/pod/perl5303delta.pod Third Party Advisory
https://github.com/Perl/perl5/compare/v5.30.2...v5.30.3 PatchThird Party Advisory
https://github.com/Perl/perl5/issues/16947 Third Party Advisory
https://github.com/Perl/perl5/issues/17743 Third Party Advisory
https://github.com/perl/perl5/commit/66bbb51b93253a3f87d11c2695cfb7bdb782184a PatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IN3TTBO5KSGWE5IRIKDJ5JS
https://security.gentoo.org/glsa/202006-03 Third Party Advisory
https://security.netapp.com/advisory/ntap-20200611-0001/ Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujan2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuoct2020.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-12723), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.