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Back to active CVEs
Low · CVSS 3.7CVE-2026-3303

IBM Concert Software Permissive Cross-domain Security PolicyCVE-2026-3303

Answer in brief

CVE-2026-3303 records a Low severity (CVSS 3.7) vulnerability in IBM Concert Software Permissive Cross-domain Security Policy. The current sources do not mark it as known exploited. The current feed maps IBM/Concert (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 19, 2026Updated Oct 19, 2026Source checked Oct 19, 2026First seen by HOL Oct 19, 2026Material review Oct 19, 2026
Upstream Advisory

Key facts

Risk
Low · CVSS 3.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 3.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps IBM/Concert (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
IBM/Concertgeneric>=1.0.0 <=3.0.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for IBM/Concert.
  2. 2Review the reported fix. Source-reported solution: IBM strongly recommends addressing these vulnerabilities now by upgrading to IBM Concert Software 3.0.1.1 Download IBM Concert Software 3.0.1.1 from Container software library section of IBM Entitled Registry (ICR) and follow installation instructions depending on the type of deployment.

Evidence timeline and material changes

  1. Published upstream

    Oct 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 19, 2026

Sources and claim methodology

  • Source referenceibm.com
Upstream source description

IBM Concert 1.0 through 3.0.0 uses cross-origin resource sharing (CORS) which could allow an attacker to carry out privileged actions as the domain name is not being limited to only trusted domains.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • IBM Concert Software Improper Certificate ValidationSame ibm/concert package
  • IBM Concert Software Improper Clearing of Heap MemorySame ibm/concert package
  • IBM Concert Software Improper Output Neutralization for LogsSame ibm/concert package
  • IBM Concert Software Information DisclosureSame ibm/concert package
  • IBM Concert Software Use of Web Browser Cache Containing Sensitive InformationSame ibm/concert package
  • IBM Concert Software Cross-Site ScriptingSame ibm/concert package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-942
Source
CVE List V5
Source checked
Oct 19, 2026
References
1 linked source
Open source record