What is CVE-2019-4008?

CVE-2019-4008 is a critical-severity vulnerability in IBM API Connect, classified under Insertion of Sensitive Information into Log File. CVSS score: 9.8/10. Published 2019-02-07.

How severe is CVE-2019-4008?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Information disclosure in IBM API Connect

CVE-2019-4008

API Connect V2018.1 through 2018.4.1.1 is impacted by access token leak. Authorization tokens in some URLs can result in the tokens being written to log files. IBM X-Force ID: 155626.

Published 2019-02-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.023 (82.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000

Affected products

IBM API Connect — versions 2018.1, 2018.4.1.1
IBM API Connect

Weakness classification (CWE)

CWE-532 — Insertion of Sensitive Information into Log File

References

exchange.xforce.ibmcloud.com/vulnerabilities/155626 (VDB Entry, vdb-entry, Vendor Advisory)
www.securityfocus.com/bid/106961 (VDB Entry, Third Party Advisory, vdb-entry)
www.ibm.com/support/docview.wss (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2019-4008?: CVE-2019-4008 is a critical-severity vulnerability in IBM API Connect, classified under Insertion of Sensitive Information into Log File. CVSS score: 9.8/10. Published 2019-02-07.
How severe is CVE-2019-4008?: Critical severity. CVSS v3 base score is 9.8 out of 10.