Cross-Origin Resource Sharing Vulnerability in IBM Concert
CVE-2026-3303

3.7LOW

Key Information:

Vendor

IBM
Status
Concert
Vendor
CVE Published:
19 October 2026

What is CVE-2026-3303?

IBM Concert versions 1.0 through 3.0.0 contain a vulnerability related to cross-origin resource sharing (CORS). This flaw allows attackers to perform privileged actions, as the application does not restrict the domain names to only trusted sources. This oversight could lead to unauthorized actions being carried out on behalf of a user, highlighting the importance of proper domain validation within CORS settings.

Affected Version(s)

Concert 1.0.0 <= 3.0.0

References

https://www.ibm.com/support/pages/node/7292374
vendor-advisorypatch

CVSS V3.1

Score:
3.7
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.