CVE-2020-16155

The CPAN::Checksums package 2.12 for Perl does not uniquely define signed data.

6.5 MediumFix available

The CPAN::Checksums package 2.12 for Perl does not uniquely define signed data.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

1.00%Up 0.4 points since Dec 13, 2021

What each source reports

NVD Score used 6.5

The CPAN::Checksums package 2.12 for Perl does not uniquely define signed data.

Record: CVE-2020-16155
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0: 4.0 MediumAV:N/AC:L/Au:S/C:N/I:P/A:N
Updated: 2026-11-02

CVE List No score

The CPAN::Checksums package 2.12 for Perl does not uniquely define signed data.

Record: CVE-2020-16155
Updated: 2026-11-02

EUVDEUVD-2020-8121 No score

The CPAN::Checksums package 2.12 for Perl does not uniquely define signed data.

Record: EUVD-2020-8121
Updated: 2026-11-03

GitHub AdvisoriesGHSA-7c2g-m3j2-jrgq No score

The CPAN::Checksums package 2.12 for Perl does not uniquely define signed data.

The CPAN::Checksums package 2.12 for Perl does not uniquely define signed data.

Record: GHSA-7c2g-m3j2-jrgq
Updated: 2026-11-02

OSV 6.5

The CPAN::Checksums package 2.12 for Perl does not uniquely define signed data.

Record: CVE-2020-16155
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2020-16155 6.5

The CPAN::Checksums package 2.12 for Perl does not uniquely define signed data.

Record: DEBIAN-CVE-2020-16155
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2020-16155 6.5

The CPAN::Checksums package 2.12 for Perl does not uniquely define signed data.

Record: UBUNTU-CVE-2020-16155
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

Affected products

cpan\ \

Affected packages

Affected packages
Package	Affected	Fixed
`libcpan-checksums-perl` Debian:12	before 2.13-1	2.13-1
`libcpan-checksums-perl` Debian:13	before 2.13-1	2.13-1
`libcpan-checksums-perl` Debian:14	before 2.13-1	2.13-1
`libcpan-checksums-perl` Ubuntu:16.04:LTS	All versions, plus listed versions 2.09-1	None known
`libcpan-checksums-perl` Ubuntu:18.04:LTS	All versions, plus listed versions 2.12-1	None known
`libcpan-checksums-perl` Ubuntu:20.04:LTS	All versions, plus listed versions 2.12-1	None known
`libcpan-checksums-perl` Ubuntu:22.04:LTS	All versions, plus listed versions 2.12-12.13-12.14-1	None known
`libcpan-checksums-perl` Ubuntu:24.04:LTS	All versions, plus listed versions 2.14-12.14-2	None known
`libcpan-checksums-perl` Ubuntu:25.10	All versions, plus listed versions 2.14-2	None known
`libcpan-checksums-perl` Ubuntu:26.10	All versions, plus listed versions 2.14-2	None known
`libcpan-checksums-perl` Ubuntu:26.04:LTS	All versions, plus listed versions 2.14-2	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-16155 is a medium vulnerability (CVSS 6.5) in Cpan\ \, published December 13, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.00%, the 62nd percentile. Fixed in libcpan-checksums-perl 2.13-1.

Attack profile

How easy it is to exploit

What an attacker can affect

Exploit likelihood

What each source reports

Affected products

Affected packages

History

In short

References