CVE-2026-113812 (GCVE-0-2026-113812)
Vulnerability from cvelistv5 – Published: 2026-10-20 21:07 – Updated: 2026-10-21 00:17
VLAI
EPSS
VEX
Title
Mozilla::CA versions before 20261020 for Perl provide a CA certificate bundle containing a root linked to compromised intermediates
Summary
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.
Severity
No CVSS data available.
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2026/… | mailing-list |
| https://metacpan.org/release/LWP/Mozilla-CA-20261… | release-notes |
| https://emudhra.we-have-a-problem.com/ | technical-description |
| https://bugzilla.mozilla.org/show_bug.cgi?id=2083449 | issue-tracking |
| http://www.openwall.com/lists/oss-security/2026/1… |
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"title": "perl-mozilla-ca: Mozilla::CA: TLS server impersonation via compromised intermediate certificates",
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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