Home/CVE/CPAN 2.28 allows Signature Verification Bypass.
CVE

CVE-2020-16156

CPAN 2.28 allows Signature Verification Bypass.

CPAN 2.28 allows Signature Verification Bypass.

HIGH · CVSS 7.8 EPSS 0.0002
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-347Improper Verification of Cryptographic Signature
▤

Affected Products & Versions

2
perl comprehensive perl archive networkall versions
fedoraproject fedoraall versions
⚠

Public Exploits & PoCs

2
pocblogs.perl.org · addressing-cpan-vulnerabilities-related-to-checksums.htmlblogs.perl.org
pocblog.hackeriet.no · cpan-signature-verification-vulnerabilitiesblog.hackeriet.no
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Dec 2021 · 06:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

3
usnUSN-5689-2
usnUSN-5689-1
rhsaRHSA-2025:8432Moderate
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SD6RYOJII7HRJ6WVORFNVTYNOFY5JDXN/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SZ32AJIV4RHJMLWLU5QULGKMMIHYOMDC/
https://metacpan.org/pod/distribution/CPAN/scripts/cpanProductThird Party Advisory
https://lists.debian.org/debian-lts-announce/2024/10/msg00017.html
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