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TI-2026-76516 Aliases CVE-2026-3303GHSA-m52p-rqhq-p69f

Permissive cross-domain policy in IBM Concert allows privileged actions

Priority LOW 17CWE-942Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

IBM Concert versions 1.0.0 through 3.0.0 uses cross-origin resource sharing (CORS) that does not limit allowed domains to trusted ones, which is CWE-942. An attacker can carry out privileged actions by making cross-domain requests from an untrusted domain.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00222 12th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
IBMConcert1.0.0 – 3.0.0—No fix listedCNA
  • Concert VendorIBM Affected 1.0.0 – 3.0.0 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:ibm:concert:*:*:*:*:*:*:*:*1.0.0 – 3.0.0VulnerableIBM
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*not specified by NVDRunning onLinux
  • cpe:2.3:a:ibm:concert:*:*:*:*:*:*:*:* Versions 1.0.0 – 3.0.0 Vulnerable ·IBM
  • cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linux

Remediation

The sources list no fixed version for IBM Concert.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    IBM Concert — ibm.com/support/pages/node/7292374

    9 records Highest priority Priority LOW 9 LOW

    Other records, highest priority first

    • TI-2026-76521 Weak cryptographic algorithms in IBM Concert expose sensitive dataPriority LOW 39
    • TI-2026-76522 Risky cryptographic algorithm in IBM Concert exposes sensitive dataPriority LOW 32
    • TI-2026-76524 IBM Concert Improper Output Neutralization for LogsPriority LOW 30
    Show all 9 records → Advisory →

Timeline

  1. 2026-10-19 Threatist record created from CVE-2026-3303
  2. 2026-10-20 Alias added: GHSA-m52p-rqhq-p69f
  3. 2026-10-20 CISA SSVC decision points changed

References

Patch 1

  • TI-2026-05889 Multiple Vulnerabilities in IBM Concert Software CVSS 3.1CRITICAL 9.8
  • TI-2026-06070 Multiple Vulnerabilities in IBM Concert Software CVSS 3.1CRITICAL 9.8
  • TI-2026-05896 Multiple Vulnerabilities in IBM Concert Software CVSS 3.1CRITICAL 9.8
  • TI-2026-03128 Multiple Vulnerabilities in IBM Concert Software CVSS 3.1CRITICAL 9.1
  • TI-2025-24073 Multiple Vulnerabilities in IBM Concert Software. CVSS 3.1CRITICAL 9.8
  • TI-2026-14345 Multiple Vulnerabilities in IBM Concert Software CVSS 3.1CRITICAL 9.6
See all 91 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences