# CVE-2026-13271

Authenticated XXE in IBM MQ allows data exfiltration or denial of service.

- Page: https://www.vulneraibility.com/cve/CVE-2026-13271
- CVSS: 8.1
- Known exploited: not in CISA KEV as of our last sync
- Weakness: CWE-611
- Published: 2026-11-04

## Affected versions

- IBM MQ: affected >= 9.2.0.0 and <= 9.2.0.44; >= 9.3.0.0 and <= 9.3.0.42; >= 9.4.0.0 and <= 9.4.0.26; >= 9.4.0.0 and <= 9.4.5.1; >= 10.0.0.0 and <= 10.0.0.5

A version outside these ranges is not a statement that it is unaffected.

## Impact

Authenticated attacker can exploit XML external entities in command queue processing to read sensitive files or cause service DoS.

## Action

Patch when possible

## Recommendation

Apply IBM PSIRT fixes immediately; disable XXE parsing and restrict admin access.

## References

- [patch] https://www.ibm.com/support/pages/node/7294654

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.