CVE-2020-16155 json
The CPAN::Checksums package 2.12 for Perl does not uniquely define signed data.
published 2021-12-13 4 y ago modified 2026-06-17 4 mo ago also EUVD-2020-8121
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 62%
- public exploits
- 0
- none known
Summary
The CPAN::Checksums package 2.12 for Perl does not uniquely define signed data.
Patch / fix
- libcpan-checksums-perl Debian 14, Debian 13, Debian 12 2.13-1
debian advisories DEBIAN-CVE-2020-16155
Exploit prediction
1.00% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- blog.hackeriet.no https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:P/A:N |
References
-
blog.hackeriet.no
/cpan-signature-verification-vulnerabilities/
exploit, third-party-advisory
-
metacpan.org
/pod/CPAN::Checksums
product, third-party-advisory
Sources
- CVE List CVE-2020-16155
- NVD CVE-2020-16155
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.