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CVE-2019-4396· NVD / CVE Program· CNA ibm

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

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.

MediumCVSS 5.4 · v3.1—No exploit No fix recorded
Published
Oct 25, 2019
Updated
Jun 16, 2026
EPSS
0.7% · 50th percentile
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Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CNA vs NVD score

NVD
5.4
CNA · ibm
5.4
agree

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
ibmcloud orchestrator

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • ibm cloud orchestrator2.4.0.0 and later · up to 2.4.0.5 inclusive
  • ibm cloud orchestrator2.5.0.0 and later · up to 2.5.0.9 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (ibm). Independent of NVD's CPE analysis and usually ahead of it.

  • 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 … (+4)affected

Same product

ibm: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-4399IBM Cloud Orchestrator 2.4 through 2.4.0.5 and 2.5 through 2.5.0.9 uses weaker than expected cryptographic algorithms that could allow an at
    30Monitor
  • CVE-2016-0204Open redirect vulnerability in IBM Cloud Orchestrator 2.4.x before 2.4.0 FP3 allows remote authenticated users to redirect users to arbitrar
    27Monitor
  • CVE-2019-4397IBM Cloud Orchestrator and IBM Cloud Orchestrator Enterprise 2.5 through 2.5.0.9 and 2.4 through 2.4.0.5 stores sensitive information in URL
    26Monitor
  • CVE-2016-0203A vulnerability has been identified in the IBM Cloud Orchestrator task API.
    22Monitor
  • CVE-2019-4461IBM Cloud Orchestrator 2.4 through 2.4.0.5 and 2.5 through 2.5.0.9 is vulnerable to HTTP Response Splitting caused by improper caching of co
    21Monitor
  • CVE-2019-4459IBM Cloud Orchestrator and IBM Cloud Orchestrator Enterprise 2.5 through 2.5.0.9 and 2.4 through 2.4.0.5 is vulnerable to cross-site scripti
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Noroxi analysis

No Noroxi analysis for this record yet

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We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records