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CVE-2026-113812critical9.1

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

Impact

Mozilla::CA versions before 20261020 for Perl contain a CA certificate bundle with a root linked to compromised intermediates, which an attacker may use to impersonate a TLS server if they can intercept client traffic. The affected bundle includes the 'emSign ECC Root CA - G3' certificate. Attacker access to client traffic is required.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

What to do

Upgrade to Mozilla-CA 20261020 or later.

CPANSec guidance

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Vendor not supplied · CPANSec

Mozilla-CA

1 range
CPANSec version evidence

Package identity

pkg:cpan/Mozilla-CA

Identity supplied by CPANSec. Version matching requires compatible range evidence.

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before 20261020

custom versions

unaffected

unknown

Other versions: unaffected

Original source 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.

Inside the record

Evidence available

Package identity
Version evidence
Remediation guidance
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-113812

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-295 ↗

CWE-295 Improper Certificate Validation

CPANSec

Related →
Contributing organizations · 3
CPANSec

Assigning organization

2026-10-20
CVE

Additional data publisher

2026-10-21
CISA-ADP

Additional data publisher

2026-10-30

What changed

Follow changes
No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.

References

5 sources
www.openwall.com/lists/oss-security/2026/10/20/1
mailing-listCPANSec
metacpan.org/release/LWP/Mozilla-CA-20261020/changes
release-notesCPANSec
emudhra.we-have-a-problem.com/
technical-descriptionCPANSec
bugzilla.mozilla.org/show_bug.cgi
issue-trackingCPANSec
www.openwall.com/lists/oss-security/2026/10/20/36
Security advisoryCVE