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CVE-2020-16156CPAN 2.28 allows Signature Verification Bypass.
- 7.8HighCVSS base score
- 0.86%Exploitation in 30 daysEPSS · top 41% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
CPAN 2.28 allows Signature Verification Bypass.
Timeline
ID reserved
By mitre
- 17 months later
· 17 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.86% · top 41% of all CVEs (13 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
n/a
- affected n/a
References
References6
- https://metacpan.org/pod/distribution/CPAN/scripts/cpan (opens in a new tab)x_refsource_MISCx_transferred
- https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/ (opens in a new tab)x_refsource_MISCx_transferred
- http://blogs.perl.org/users/neilb/2021/11/addressing-cpan-vulnerabilities-related-to-checksums.html (opens in a new tab)x_refsource_MISCx_transferred
- FEDORA-2022-21e8372c42 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2022-84fd87f7eb (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://lists.debian.org/debian-lts-announce/2024/10/msg00017.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-8122 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-16156)Record last updated .