Is CVE-2026-95831 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-95831 being exploited in the wild.

How severe is CVE-2026-95831?

High severity, with a CVSS score of 7.8, published 22 September 2026.

Which products and versions are affected?

CPAN Crypt::SelfCertificate 1.01 through 1.05.

Is there a fix for CVE-2026-95831?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-95831 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-95831?

Check whether you run CPAN Crypt::SelfCertificate at an affected version. 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.

CVE-2026-95831: Crypt::SelfCertificate malware in Perl module

CVE-2026-95831 · Severity: high · CVSS 7.8 · Published 2026-09-22

Crypt::SelfCertificate is a Perl module for generating X.509 certificates. Versions 1.01 through 1.05 contain malicious code that downloads and executes arbitrary Python payloads from a remote server when the generate_certificate function is called. An attacker can gain complete control of systems running vulnerable versions, potentially leading to data theft, malware installation, or system compromise.

Vendors: CPAN.

Quick answers

Is CVE-2026-95831 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-95831 being exploited in the wild.
How severe is CVE-2026-95831?: High severity, with a CVSS score of 7.8, published 22 September 2026.
Which products and versions are affected?: CPAN Crypt::SelfCertificate 1.01 through 1.05.
Is there a fix for CVE-2026-95831?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-95831 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-95831?: Check whether you run CPAN Crypt::SelfCertificate at an affected version. 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

The module contains embedded Python scripts in certificate files (validate.p12 in 1.01, cert7.pem in 1.05) that execute during certificate generation. These scripts fetch obfuscated code from http://144.172.104.211/settings/privacy.php and execute it directly without validation. Attack vector is local execution when generate_certificate() is called; no authentication or network connectivity from the victim is required beyond reaching the attacker's server.

Affected products

CPAN Crypt::SelfCertificate 1.01 through 1.05

Timeline

2026-09-22: disclosed: CPANSec identified malware in versions 1.01 and later; module removed from CPAN

References

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