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CVE-2019-4396

19
FAUCET Score

CVE-2019-4396 describes an HTTP response splitting vulnerability in IBM Cloud Orchestrator versions 2.4 through 2.4.0.5 and 2.5 through 2.5.0.9, stemming from inadequate user input validation. This medium-severity vulnerability (CVSS 5.4) allows a remote attacker to inject arbitrary HTTP headers, leading to a split response that could facilitate web cache poisoning or cross-site scripting, potentially exposing sensitive information. While the attack requires user interaction (clicking a malicious URL), there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.4.0.0, <= 2.4.0.5CPE matchmatch criteria
cpe:2.3:a:ibm:cloud_orchestrator:*:*:*:*:-:*:*:*
>= 2.4.0.0, <= 2.4.0.5CPE matchmatch criteria
cpe:2.3:a:ibm:cloud_orchestrator:*:*:*:*:enterprise:*:*:*
>= 2.5.0.0, <= 2.5.0.9CPE matchmatch criteria
cpe:2.3:a:ibm:cloud_orchestrator:*:*:*:*:-:*:*:*
>= 2.5.0.0, <= 2.5.0.9CPE matchmatch criteria
cpe:2.3:a:ibm:cloud_orchestrator:*:*:*:*:enterprise:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.67%
Probability of exploitation in next 30 days
EPSS Percentile
48.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0067 is in the 81st percentile among its peer group of 15,222 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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/162236
VDB EntryVendor Advisory
ibm.com / support/pages/node/1096354
Vendor Advisory