PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-16426 IBM CVE debrief

IBM Concert 1.0.0 through 3.0.0 is vulnerable to server-side request forgery (SSRF). This may allow an authenticated attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks. The vulnerability has a medium severity and requires immediate attention from network defenders and system administrators. Affected product deployments should be identified in managed environments, and owners should be assigned for follow-up. The official advisory or CVE record should be reviewed to validate affected scope, severity, and vendor guidance. Vendor-supported updates or mitigations should be planned through normal change控制where

Vendor
IBM
Product
Concert
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-22
Original CVE updated
2026-11-03
Advisory published
2026-09-22
Advisory updated
2026-11-03

Who should care

Network defenders, system administrators, and security teams responsible for IBM Concert installations should assess exposure and prioritize remediation.

Why it matters

CVE-2026-16426 is a medium-severity vulnerability in IBM Concert that allows authenticated attackers to send unauthorized requests, potentially leading to network enumeration or other attacks. Defenders should assess exposure, prioritize remediation, and verify affected versions.

  • Potential network enumeration by attackers.
  • Possible facilitation of other attacks using the vulnerable system.
  • Need for verification of affected versions and exposure.
  • Priority for updating or patching vulnerable IBM Concert installations.

Technical summary

IBM Concert 1.0.0 through 3.0.0 is vulnerable to server-side request forgery (SSRF) due to improper validation of user requests. An authenticated attacker could exploit this vulnerability to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks.

Defensive priority

Medium-priority vulnerability requiring immediate attention from network defenders and system administrators.

Recommended defensive actions

  • Review and update IBM Concert versions to ensure they are not vulnerable.
  • Implement network monitoring to detect and prevent unauthorized requests.
  • Restrict access to sensitive areas of the system to authenticated users only.

Evidence notes

The CVE record and NVD vulnerability detail page provide information on the vulnerability, including its description, CVSS score, and affected versions.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-16426 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-16426

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

  • CVE-2026-16426 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-16426

    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.