CVE-2023-47038

Name: CVE-2023-47038
Creator: NVD / NIST
Published: 2023-12-18T14:15:08.933+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.83%

Last modified Jun 17, 2026

CVE-2023-47038 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.83% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.83%

53.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Perl	Perl	>= 5.30.0, <= 5.38.0
Fedoraproject	Fedora	39
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux	9.0
Redhat	Enterprise Linux Aus	9.4
Redhat	Enterprise Linux Eus	9.4

References

https://access.redhat.com/errata/RHSA-2024:2228Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:3128Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-47038Broken Link, Third Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1056746Mailing List, Patch
https://bugzilla.redhat.com/show_bug.cgi?id=2249523Issue Tracking, Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:2228Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:3128Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-47038Broken Link, Third Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1056746Mailing List, Patch
https://bugzilla.redhat.com/show_bug.cgi?id=2249523Issue Tracking, Third 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/GNEEWAACXQCEEAKSG7XX2D5YDRWLCIZJ/Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UMDZZ4SCEW6FRWZDMXGAKZ35THTAWFG6/
https://perldoc.perl.org/perl5382delta#CVE-2023-47038-Write-past-buffer-end-via-illegal-user-defined-Unicode-propertyVendor Advisory
https://ubuntu.com/security/CVE-2023-47100
https://www.suse.com/security/cve/CVE-2023-47100.html

Timeline

Published: Dec 18, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-47038?

How severe is CVE-2023-47038?

CVE-2023-47038 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.83% probability of exploitation in the next 30 days.

How do I fix CVE-2023-47038?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-47038?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST