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Mozilla-CA-20260813
⭐ Starred 1 / Mozilla::CA
Security Advisories (1)
CVE-2026-113812 (2026-10-20)

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.

NAME

Mozilla::CA - Mozilla's CA cert bundle in PEM format

SYNOPSIS

use IO::Socket::SSL;
use Mozilla::CA;

my $host = "www.paypal.com";
my $client = IO::Socket::SSL->new(
    PeerHost => "$host:443",
    SSL_verify_mode => 0x02,
    SSL_ca_file => Mozilla::CA::SSL_ca_file(),
)
    || die "Can't connect: $@";

$client->verify_hostname($host, "http")
    || die "hostname verification failure";

DESCRIPTION

Mozilla::CA provides a copy of Mozilla's bundle of Certificate Authority certificates in a form that can be consumed by modules and libraries based on OpenSSL.

The module provide a single function:

SSL_ca_file()

Returns the absolute path to the Mozilla's CA cert bundle PEM file.

SEE ALSO

http://curl.haxx.se/docs/caextract.html

LICENSE

For the bundled Mozilla CA PEM file the following applies:

This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.

The Mozilla::CA distribution itself is available under the same license.