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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-113812
StatePUBLISHED
AssignerCPANSec
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-20 22:19:30 UTC
Updated2026-10-20 22:19:30 UTC
DescriptionMozilla::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.

Risk And Classification

Problem Types: CWE-295 | CWE-295 CWE-295 Improper Certificate Validation

References

ReferenceSourceLinkTags
bugzilla.mozilla.org/show_bug.cgi 9b29abf9-4ab0-4765-b253-1875cd9b441e bugzilla.mozilla.org
emudhra.we-have-a-problem.com 9b29abf9-4ab0-4765-b253-1875cd9b441e emudhra.we-have-a-problem.com
metacpan.org/release/LWP/Mozilla-CA-20261020/changes 9b29abf9-4ab0-4765-b253-1875cd9b441e metacpan.org
www.openwall.com/lists/oss-security/2026/10/20/1 9b29abf9-4ab0-4765-b253-1875cd9b441e www.openwall.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: Upgrade to Mozilla-CA 20261020 or later.

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