CVSS 3.1
9.9 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:LCVE-2026-16884
Critical (9.9) in ibm api connect. EPSS 0.5% estimated probability of exploitation activity in the next 30 days.
IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a remote attacker to obtain sensitive information due to an XML external entity (XXE) injection.
Severity
- EPSS
- 0.5% estimated probability of exploitation activity in the next 30 days; 43rd percentile. Scored 2026-11-10. A forecast for this CVE across the internet, not for your own systems.
- CWE
- CWE-611 Improper Restriction of XML External Entity Reference
- OWASP Top 10
- A02:2025 Security Misconfiguration
- 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.
| Product | Affected |
|---|---|
| IBM API Connect | from 12.1.0.0 through 12.1.1.2 |
Attack patterns (CAPEC)
- CAPEC-221 Data Serialization External Entities Blowup
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.