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CVE-2019-4203

31
FAUCET Score

CVE-2019-4203 is a critical vulnerability affecting IBM API Connect versions 5.0.0.0 through 5.0.8.6 Developer Portal, allowing app developers to download arbitrary files from the host OS and potentially conduct Server-Side Request Forgery (SSRF) attacks. With a CVSS score of 9.8 (CRITICAL), this vulnerability presents a significant risk due to its network-based attack vector, low attack complexity, and high potential for confidentiality, integrity, and availability impacts. While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, its high FAUCET Risk Score of 79/100 indicates a substantial inherent risk.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.0.0.0, <= 5.0.8.6CPE matchmatch criteria
cpe:2.3:a:ibm:api_connect:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.9HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.73%
Probability of exploitation in next 30 days
EPSS Percentile
75.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0173 is in the 63rd percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/159124
VDB EntryVendor Advisory
ibm.com / support/docview.wss
Vendor Advisory
securityfocus.com / bid/107905
Third Party AdvisoryVDB Entry