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Vulnerability record · CVE-2023-47038 · published 18 December 2023

CVE-2023-47038: Perl heap-based buffer overflow vulnerability

Perl · Perl

A vulnerability was found in perl 5.30.0 through 5.38.0. This issue occurs when a crafted regular expression is compiled by perl, which can allow an attacker controlled byte buffer overflow in a heap allocated buffer.

7.8 CVSS 3.1 High EPSS 0.81% · top 44.2% CWE-122 · Heap-based buffer overflowCWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score
0.81%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
19References
17 Jun 2026Last modified by NVD

Description

A vulnerability was found in perl 5.30.0 through 5.38.0. This issue occurs when a crafted regular expression is compiled by perl, which can allow an attacker controlled byte buffer overflow in a heap allocated buffer.

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

Affected products

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

References

LinkTags
https://access.redhat.com/errata/RHSA-2024:2228 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:3128 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-47038 Broken LinkThird Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1056746 Mailing ListPatch
https://bugzilla.redhat.com/show_bug.cgi?id=2249523 Issue TrackingThird Party Advisory
https://access.redhat.com/errata/RHSA-2024:2228 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:3128 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-47038 Broken LinkThird Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1056746 Mailing ListPatch
https://bugzilla.redhat.com/show_bug.cgi?id=2249523 Issue TrackingThird Party Advisory
https://github.com/Perl/perl5/commit/12c313ce49b36160a7ca2e9b07ad5bd92ee4a010
https://github.com/Perl/perl5/commit/7047915eef37fccd93e7cd985c29fe6be54650b6
https://github.com/Perl/perl5/commit/ff1f9f59360afeebd6f75ca1502f5c3ebf077da3
https://github.com/aquasecurity/trivy/discussions/8400
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNEEWAACXQCEEAKSG7XX2D5YD Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UMDZZ4SCEW6FRWZDMXGAKZ35T
https://perldoc.perl.org/perl5382delta#CVE-2023-47038-Write-past-buffer-end-via-illegal-user-defined-Unicode-property Vendor Advisory
https://ubuntu.com/security/CVE-2023-47100
https://www.suse.com/security/cve/CVE-2023-47100.html

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Source: NIST National Vulnerability Database (record CVE-2023-47038), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.