CVE-2023-31484

HIGHNVD 8.18.1—

8.1

CPAN.pm before 2.35 does not verify TLS certificates when downloading distributions over HTTPS.

CVSS v3: 8.1
EG Score: 8.1(medium)
EPSS: 72.0%
KEV: Not listed

Published

April 29, 2023

Last Modified

November 3, 2025

References (23)

cve@mitrehttp://www.openwall.com/lists/oss-security/2023/04/29/1
cve@mitrehttp://www.openwall.com/lists/oss-security/2023/05/03/3
cve@mitrehttp://www.openwall.com/lists/oss-security/2023/05/03/5
cve@mitrehttp://www.openwall.com/lists/oss-security/2023/05/07/2
cve@mitrehttps://blog.hackeriet.no/perl-http-tiny-insecure-tls-default-affects-cpan-modules/
cve@mitrehttps://github.com/andk/cpanpm/pull/175
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BM6UW55CNFUTNGD5ZRKGUKKKFDJGMFHL/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LEGCEOKFJVBJ2QQ6S2H4NAEWTUERC7SB/
cve@mitrehttps://metacpan.org/dist/CPAN/changes
cve@mitrehttps://security.netapp.com/advisory/ntap-20240621-0007/
cve@mitrehttps://www.openwall.com/lists/oss-security/2023/04/18/14
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2023/04/29/1
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2023/05/03/3
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2023/05/03/5
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2023/05/07/2

Patch Availability(6)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	libperl5.22 (5.22.1-9ubuntu0.9+esm2) @ xenial	2026-05-25	ubuntu
ubuntu	libperl5.36 (5.36.0-7ubuntu0.23.04.1) @ lunar	2026-05-25	ubuntu
redhat	perl-main-1.03-524.1.hum1	2026-04-10	redhat
redhat	perl-4:5.16.3-299.el7_9.1	2026-01-05	redhat
redhat	perl-CPAN-0:2.18-399.el8	2024-05-22	redhat
redhat	perl-CPAN-0:2.29-3.el9	2023-11-07	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-295Improper Certificate Validation

All Vendor Advisories

(7)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 14× in last 7d / 57× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-23 21:31 UTCEPSS rescore
2026-06-23 21:31 UTCEPSS rescore
2026-06-22 14:24 UTCEPSS rescore
2026-06-22 14:24 UTCEPSS rescore
2026-06-21 14:55 UTCEPSS rescore
2026-06-21 14:55 UTCEPSS rescore
2026-06-21 01:58 UTCEPSS rescore
2026-06-21 01:58 UTCEPSS rescore
2026-06-19 19:24 UTCEPSS rescore
2026-06-19 19:24 UTCEPSS rescore
2026-06-18 17:51 UTCEPSS rescore
2026-06-18 17:51 UTCEPSS rescore
2026-06-17 17:51 UTCEPSS rescore
2026-06-17 17:51 UTCEPSS rescore
2026-06-16 17:51 UTCEPSS rescore
2026-06-16 17:51 UTCEPSS rescore
2026-06-15 17:47 UTCEPSS rescore
2026-06-14 23:16 UTCEPSS rescore
2026-06-13 22:59 UTCEPSS rescore
2026-06-13 22:59 UTCEPSS rescore
2026-06-12 23:10 UTCEPSS rescore
2026-06-11 13:59 UTCEPSS rescore
2026-06-10 22:17 UTCEPSS rescore
2026-06-10 13:21 UTCEPSS rescore
2026-06-10 13:21 UTCEPSS rescore

Show 35 more

2026-06-10 09:17 UTCOSV refresh
2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:43 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore
2026-05-27 13:39 UTCEPSS rescore
2026-05-27 13:39 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:17 UTCEPSS rescore
2026-05-25 02:09 UTCEG score recompute
2026-05-25 02:09 UTCVendor advisory
2026-05-25 02:09 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-31484?

CVE-2023-31484 is a high vulnerability published on April 29, 2023. CPAN.pm before 2.35 does not verify TLS certificates when downloading distributions over HTTPS.

When was CVE-2023-31484 disclosed?

CVE-2023-31484 was first published in the National Vulnerability Database on April 29, 2023, with the most recent update on November 3, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-31484 actively exploited?

CVE-2023-31484 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 72.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-31484?

CVE-2023-31484 has a CVSS v3 base score of 8.1 (NVD).

How do I remediate CVE-2023-31484?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-31484, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2023-31484

Explore →

Is Your Infrastructure Affected by CVE-2023-31484?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs