‹ Back to list

CVE-2026-113812

Status: Awaiting AnalysisUnscored—
Severity—Unscored
Exploitation probability0.15 %higher than 4% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

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.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.15 %
Percentile among all scored CVEs
4
Score date
10/24/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Mozilla CA — Mozilla CAAI

CWEs

References

Show 5 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-113812",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "repo": "https://github.com/libwww-perl/Mozilla-CA",
          "modules": [
            "Mozilla::CA"
          ],
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "20261020",
              "versionType": "custom"
            }
          ],
          "packageURL": "pkg:cpan/Mozilla-CA",
          "packageName": "Mozilla-CA",
          "programFiles": [
            "lib/Mozilla/CA/cacert.pem"
          ],
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-10-20T22:19:30.697",
  "references": [
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2083449",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://emudhra.we-have-a-problem.com/",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://metacpan.org/release/LWP/Mozilla-CA-20261020/changes",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://www.openwall.com/lists/oss-security/2026/10/20/1",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/10/20/36",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mozilla::CA versions before 20261020 for Perl provide a CA certificate bundle containing a root linked to compromised intermediates.\n\nThe bundle includes \"emSign ECC Root CA - G3\", which provides a trust path for intermediate certificates whose private keys are publicly available.\n\nAn attacker able to intercept or redirect client traffic may use these keys to impersonate a TLS server.\n\nLWP, 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.\n\nConfiguration 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."
    }
  ],
  "lastModified": "2026-10-22T17:21:57.293",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
}