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TI-2023-15091 Aliases CVE-2023-31484GHSA-5v8j-jfmm-6x86

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

Priority MEDIUM 40CWE-295Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Spoofing
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 5 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-295.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01548 75th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 4 advisoriesRed Hat: 5 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:cpanpm_project:cpanpm:*:*:*:*:*:*:*:*before 2.35VulnerableCpanpm Project
cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:*before 5.38.0VulnerablePerl
  • cpe:2.3:a:cpanpm_project:cpanpm:*:*:*:*:*:*:*:* Versions before 2.35 Vulnerable ·Cpanpm Project
  • cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:* Versions before 5.38.0 Vulnerable ·Perl

Remediation

Red Hat 4 advisories

  • RHSA-2026:7604 Released 2026-04-10 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images perl-5.42.2-524.1.hum1@aarch64, perl-5.42.2-524.1.hum1@src, perl-5.42.2-524.1.hum1@x86_64 +47
  • RHSA-2026:0079 Released 2026-01-05 · Red Hat rating Moderate
    perl security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) perl-4:5.16.3-299.el7_9.1, perl-CPAN-1.9800-299.el7_9.1, perl-ExtUtils-CBuilder-1:0.28.2.6-299.el7_9.1 +16
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) perl-tests-4:5.16.3-299.el7_9.1
  • RHSA-2024:3094 Released 2024-05-22 · Red Hat rating Moderate
    perl-CPAN security update
    • Red Hat Enterprise Linux AppStream (v. 8) perl-CPAN-2.18-399.el8
Show 1 more Red Hat advisories
  • RHSA-2023:6539 Released 2023-11-07 · Red Hat rating Moderate
    perl-CPAN security update
    • Red Hat Enterprise Linux AppStream (v. 9) perl-CPAN-2.29-3.el9

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2024:3094
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:6539
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2026:0079
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2026:0079
Red Hat Hardened ImagesFixed RHSA-2026:7604

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-31484
  2. 2026-10-03 Alias added: GHSA-5v8j-jfmm-6x86

References

Exploit 1

Patch 4

Advisory 2

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences