CVE-2026-9265: Crypt::OpenSSL::PKCS12 heap out-of-bounds read in print_attribute

CVE-2026-9265 · Severity: info · CVSS 0 · Published 2026-06-20

Crypt::OpenSSL::PKCS12 is a Perl library used to process PKCS#12 files, which typically store digital certificates and private keys. A security flaw in how the library handles certain text attributes allows a specially crafted file to trigger an out-of-bounds memory read. This could allow an attacker to potentially access sensitive information from the application's memory or cause the application to crash.

Quick answers

Is CVE-2026-9265 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-9265 being exploited in the wild.
How severe is CVE-2026-9265?
Informational severity, with a CVSS score of 0, published 20 June 2026.
Which products and versions are affected?
JONASBN Crypt::OpenSSL::PKCS12 < 1.96.
Is there a fix for CVE-2026-9265?
A patch was published on 2026-06-19: Fixed in version 1.96 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-9265 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-9265?
Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A heap out-of-bounds read exists in the print_attribute() function within PKCS12.xs. The vulnerability occurs because UTF8STRING ASN.1 attribute values are copied into a heap buffer using strncpy() without ensuring a NUL terminator is present. Subsequent calls to strlen() on this non-terminated buffer result in an inflated length, causing newSVpvn() to copy adjacent heap memory into a Perl scalar. This can be triggered via the info() or info_as_hash() methods when processing a malformed PKCS12 file. The issue was fixed in version 1.96 by ensuring proper NUL termination and adding length guards.

Affected products

  • JONASBN Crypt::OpenSSL::PKCS12 < 1.96

Timeline

  • 2026-05-17: disclosed: Issue reported on GitHub
  • 2026-06-19: patched: Fixed in version 1.96
  • 2026-06-20: advisory: NVD publication date

References

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