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CVE-2026-19121

8.3 highEPSS 0.4%

High (8.3) in ibm api connect. EPSS 0.4% estimated probability of exploitation activity in the next 30 days.

On this page
IBM API Connect 12.1.0.0 through 12.1.1.2 could allow an authenticated attacker to gain unauthorized access due to improper authorization. Tenant context is not sufficiently verified against the authenticated user, which could allow access to another tenant's resources.

Severity

CVSS 3.1

8.3 high
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
EPSS
0.4% estimated probability of exploitation activity in the next 30 days; 32nd percentile. Scored 2026-11-10. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-290 Authentication Bypass by Spoofing
OWASP Top 10
A07:2025 Authentication Failures
Published
Modified
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

  • ibm:api connect

Versions

From the CNA's record in the CVE List.

ProductAffected
IBM API Connectfrom 12.1.0.0 through 12.1.1.2

Attack patterns (CAPEC)

  • CAPEC-21 Exploitation of Trusted Identifiers Likelihood: High · Severity: High
  • CAPEC-22 Exploiting Trust in Client Likelihood: High · Severity: High
  • CAPEC-59 Session Credential Falsification through Prediction Likelihood: High · Severity: High
  • CAPEC-60 Reusing Session IDs (aka Session Replay) Likelihood: High · Severity: High
  • CAPEC-94 Adversary in the Middle (AiTM) Likelihood: High · Severity: Very High
  • CAPEC-459 Creating a Rogue Certification Authority Certificate Likelihood: Medium · Severity: Very High
  • CAPEC-461 Web Services API Signature Forgery Leveraging Hash Function Extension Weakness Severity: High
  • CAPEC-473 Signature Spoof
  • CAPEC-476 Signature Spoofing by Misrepresentation Likelihood: Low · Severity: High
  • CAPEC-667 Bluetooth Impersonation AttackS (BIAS) Likelihood: Medium · Severity: High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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