What is CVE-2026-8721?

CVE-2026-8721 is a critical-severity vulnerability in Jonasbn Crypt::openssl::pkcs12, classified under Improper Null Termination. CVSS score: 9.8/10. Published 2026-05-17.

How severe is CVE-2026-8721?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Jonasbn Crypt::openssl::pkcs12

CVE-2026-8721

Crypt::OpenSSL::PKCS12 versions through 1.94 for Perl truncates passwords with embedded NULLs. Password parameters in PKCS12.xs are declared char *, which routes through Perl's default typemap to SvPV_nolen. The Perl length is discarded…

EPSS: 0.000 (5.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Jonasbn Crypt::openssl::pkcs12 — versions 0

Weakness classification (CWE)

CWE-170 — Improper Null Termination

References

9b29abf9-4ab0-4765-b253-1875cd9b441e (release-notes)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-8721?: CVE-2026-8721 is a critical-severity vulnerability in Jonasbn Crypt::openssl::pkcs12, classified under Improper Null Termination. CVSS score: 9.8/10. Published 2026-05-17.
How severe is CVE-2026-8721?: Critical severity. CVSS v3 base score is 9.8 out of 10.