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Vulnerability details: VCID-8v62-79q2-aaaj
Vulnerability ID VCID-8v62-79q2-aaaj
Aliases CVE-2020-16156
Summary CPAN 2.28 allows Signature Verification Bypass.
Status Published
Exploitability 0.5
Weighted Severity 7.0
Risk 3.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-347 Improper Verification of Cryptographic Signature
System Score Found at
cvssv3 7.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-16156.json
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
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epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
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epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
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epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
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epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
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epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
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epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00033 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00185 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00185 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00185 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00185 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00185 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00185 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00185 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00185 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00185 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00185 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00185 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
epss 0.00204 https://api.first.org/data/v1/epss?cve=CVE-2020-16156
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=2035273
cvssv3.1 8.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2020-16156
cvssv3 7.8 https://nvd.nist.gov/vuln/detail/CVE-2020-16156
cvssv3.1 7.8 https://nvd.nist.gov/vuln/detail/CVE-2020-16156
archlinux Medium https://security.archlinux.org/AVG-2630
Reference id Reference type URL
http://blogs.perl.org/users/neilb/2021/11/addressing-cpan-vulnerabilities-related-to-checksums.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-16156.json
https://api.first.org/data/v1/epss?cve=CVE-2020-16156
https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16156
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SD6RYOJII7HRJ6WVORFNVTYNOFY5JDXN/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SZ32AJIV4RHJMLWLU5QULGKMMIHYOMDC/
https://metacpan.org/pod/distribution/CPAN/scripts/cpan
1015985 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1015985
2035273 https://bugzilla.redhat.com/show_bug.cgi?id=2035273
AVG-2630 https://security.archlinux.org/AVG-2630
cpe:2.3:a:perl:comprehensive_perl_archive_network:2.28:-:*:*:*:perl:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:perl:comprehensive_perl_archive_network:2.28:-:*:*:*:perl:*:*
cpe:2.3:a:perl:comprehensive_perl_archive_network:2.28:trial:*:*:*:perl:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:perl:comprehensive_perl_archive_network:2.28:trial:*:*:*:perl:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
CVE-2020-16156 https://nvd.nist.gov/vuln/detail/CVE-2020-16156
RHSA-2025:8432 https://access.redhat.com/errata/RHSA-2025:8432
USN-5689-1 https://usn.ubuntu.com/5689-1/
USN-5689-2 https://usn.ubuntu.com/5689-2/
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-16156.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-16156
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-16156
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-16156
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.01163
EPSS Score 0.00014
Published At April 2, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.