# CVE-2026-8721

## Summary

- **CVE ID:** CVE-2026-8721
- **Severity:** CRITICAL
- **CVSS Score:** 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** CWE-170
- **Published:** May 17, 2026
- **Last Modified:** May 18, 2026

## Description

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.

The C code (or OpenSSL internally) calls strlen() on the buffer.  Any password byte at or after the first NULL is silently dropped. Binary / KDF-derived / HMAC-derived passwords lose entropy without any warnings.

## Affected Products

- JONASBN — Crypt::OpenSSL::PKCS12 (0)

## References

- [CNA](https://metacpan.org/release/JONASBN/Crypt-OpenSSL-PKCS12-1.95/view/Changes.md)
- [CVE](http://www.openwall.com/lists/oss-security/2026/05/17/6)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.45%
- **EPSS Percentile:** 37.7

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._