CVE-2026-113812 Mozilla::CA versions before 20261020 for Perl provide a CA certificate bundle containing a root linked to compromised intermediates.

What is CVE-2026-113812?

CVE-2026-113812 is a vulnerability in perl-Mozilla-CA, published on 20 Oct 2026.

Official description

Mozilla::CA versions before 20261020 for Perl provide a CA certificate bundle containing a root linked to compromised intermediates.

The bundle includes "emSign ECC Root CA - G3", which provides a trust path for intermediate certificates whose private keys are publicly available.

An attacker able to intercept or redirect client traffic may use these keys to impersonate a TLS server.

LWP, HTTP::Tiny and other clients normally use IO::Socket::SSL, which looks for CA certificates in OpenSSL's default locations before falling back to Mozilla::CA.

Configuration and environment variables can override this selection. Users should check which CA store their client uses. If it uses the system store, check for and install the operating system vendor's updates for this incident.

Weakness: CWE-295

Which versions are affected by CVE-2026-113812?

How do I fix CVE-2026-113812?

Upgrade to a fixed version.

Is CVE-2026-113812 being exploited?

There is no known exploitation of CVE-2026-113812 in the wild and no public exploit code.

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-109872, BELL-CVE-2026-113812, DEBIAN-CVE-2026-113812, GHSA-h2xv-9jg2-5v55, MGASA-2026-0536, UBUNTU-CVE-2026-113812 and 1 more.