TI-2020-03949 Aliases CVE-2020-4640 GHSA-4j45-pxr4-w4g4

Information disclosure in IBM API Connect

LOW 19CWE-200Published 2021-02-04 · Updated 2024-09-16

Key facts

Attack vector: Adjacent network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-200.

Summary

Certain IBM API Connect 10.0.0.0 through 10.0.1.0 and 2018.4.1.0 through 2018.4.1.13 configurations can result in sensitive information in the URL fragment identifiers. This information can be cached in the intermediate nodes like proxy servers, cdn, logging platforms, etc. An attacker can make use of this information to perform attacks by impersonating a user. IBM X-Force ID: 185510.

Why it matters now

EPSS 0.00352 29th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
IBM	API Connect	2018.4.1.0; 2018.4.1.13; 10.0.0.0; 10.0.1.0	—	No fix listed	CNA

API Connect VendorIBM Affected 2018.4.1.0; 2018.4.1.13; 10.0.0.0; 10.0.1.0 Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:a:ibm:api_connect::::::::	2018.4.1.0 – 2018.4.1.13	Vulnerable	IBM
cpe:2.3:a:ibm:api_connect:10.0.0.0:::::::*	10.0.0.0	Vulnerable	IBM
cpe:2.3:a:ibm:api_connect:10.0.1.0:::::::*	10.0.1.0	Vulnerable	IBM

cpe:2.3:a:ibm:api_connect:*:*:*:*:*:*:*:* Versions 2018.4.1.0 – 2018.4.1.13 Vulnerable ·IBM
cpe:2.3:a:ibm:api_connect:10.0.0.0:*:*:*:*:*:*:* Versions 10.0.0.0 Vulnerable ·IBM
cpe:2.3:a:ibm:api_connect:10.0.1.0:*:*:*:*:*:*:* Versions 10.0.1.0 Vulnerable ·IBM

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-4640
2026-10-03 Alias added: GHSA-4j45-pxr4-w4g4

References

Advisory 1

https://www.ibm.com/support/pages/node/6410486

TI-2025-12717 Authentication bypass in IBM API Connect CVSS 3.1CRITICAL 9.8
TI-2019-03132 OS command injection in IBM API Connect CVSS 3.1CRITICAL 10.0
TI-2026-07972 IBM API Connect SQL Injection CVSS 3.1CRITICAL 9.8
TI-2019-03106 IBM API Connect's Developer Portal 2018.1 and 2018.4.1.3 is impacted by a privilege… CVSS 3.0CRITICAL 9.8
TI-2018-01353 IBM API Connect Developer Portal 5.0.0.0 through 5.0.8.2 could allow an unauthenticated… CVSS 3.0CRITICAL 9.8
TI-2019-03133 Server-side request forgery in IBM API Connect CVSS 3.1CRITICAL 9.8

See all 80 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences