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CVE-2026-4096 IBM CVE debrief

CVE-2026-4096 is a medium-severity vulnerability affecting IBM DevOps Plan versions 3.0.0 through 3.0.6. The vulnerability is caused by improper validation of input by the HOST headers, leading to HTTP header injection. This could allow an attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning, or session hijacking.

Vendor
IBM
Product
DevOps Plan
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-11
Original CVE updated
2026-07-27
Advisory published
2026-06-11
Advisory updated
2026-07-27

Who should care

Users of IBM DevOps Plan 3.0.0 through 3.0.6 should be aware of this vulnerability and take necessary actions to mitigate the risk.

Technical summary

The vulnerability has a CVSS score of 6.5 and is classified as CWE-644. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Defensive priority

MEDIUM

Recommended defensive actions

  • Apply the necessary patches or updates provided by IBM to fix the vulnerability.
  • Review and update the configuration of IBM DevOps Plan to ensure proper validation of input by the HOST headers.
  • Monitor the system for any suspicious activity and implement additional security measures if necessary.

Evidence notes

The CVE record was published on 2026-06-11T16:16:24.140Z and modified on 2026-06-11T20:56:29.653Z. The vulnerability was reported by [email protected].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-4096 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-4096

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-4096 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-4096

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.