CVE-2023-47038
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.
Key facts
- CVSS score
- 7.0 (v3.1)
- Severity
- HIGH
- CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
- CWE-122
- EPSS score
- 0.8% (56th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2023-51193)
- Published
- December 18, 2023
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2023-51193 in the EU Vulnerability Database. Last updated in EUVD on January 22, 2026.
View on the EU Vulnerability DatabaseAffected products
- fedoraproject / fedora
- perl / perl
- redhat / enterprise linux
- redhat / enterprise linux
- redhat / enterprise linux aus
- redhat / enterprise linux eus
Certified products that may be affected
32 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- Red Hat Enterprise Linux 8 NSS Cryptographic Module - Red Hat, Inc. - FIPS 140 5513 - active
- Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, LLC - FIPS 140 5461 - active
- Red Hat Enterprise Linux 9 Kernel Cryptographic API - Red Hat, Inc. - FIPS 140 5445 - active
- Red Hat Enterprise Linux 9 libgcrypt - Red Hat, Inc. - FIPS 140 5366 - active
- Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, Inc. - FIPS 140 5089 - active
See all 32 in the Security Certifications Explorer.
References
- 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 Link, Third Party Advisory)
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1056746(Mailing List, Patch)
- https://bugzilla.redhat.com/show_bug.cgi?id=2249523(Issue 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-property(Vendor Advisory)
- https://ubuntu.com/security/CVE-2023-47100
- https://www.suse.com/security/cve/CVE-2023-47100.html
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain