Buffer overflow in Jonasbn Crypt::openssl::pkcs12

CVE-2026-8507

Crypt::OpenSSL::PKCS12 versions through 1.94 for Perl have out-of-bounds (OOB) write flaws. When parsing a PKCS12 file, with a >= 1 GiB OCTET STRING (or BIT STRING) attribute on a SAFEBAG, via info() or info_as_hash(), a heap out-of-bound…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (16.3th 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

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-8507?
CVE-2026-8507 is a critical-severity vulnerability in Jonasbn Crypt::openssl::pkcs12, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2026-05-17.
How severe is CVE-2026-8507?
Critical severity. CVSS v3 base score is 9.8 out of 10.