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CVE-2026-13271

IBM MQ Managed File Transfer is affected by a denial of service vulnerability

Products / packages IBM MQ

Published

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Severity and exploitation

Not in CISA KEV

KEV coverage does not rule out exploitation.

KEV checked 15/11/2026, 01:50:31 UTC
ibm · CVSS:3.1 · 8.1
Assessment vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Severity

high8.1

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Source guidance available

Review the recorded instructions. Guidance may be a workaround rather than a fixed version.

What this means

IBM MQ Managed File Transfer versions 9.2.0.0 through 9.2.0.44, 9.3.0.0 through 9.3.0.42, 9.4.0.0 through 9.4.0.26, 9.4.0.0 through 9.4.5.1, and 10.0.0.0 through 10.0.0.5 may allow an authenticated attacker to cause a denial of service due to improper restriction of XML external entity references.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

IBM · ibm

MQ

5 ranges
ibm version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

9.2.0.0 → through 9.2.0.44

semver versions

9.3.0.0 → through 9.3.0.42

semver versions

9.4.0.0 → through 9.4.0.26

semver versions

9.4.0.0 → through 9.4.5.1

semver versions

10.0.0.0 → through 10.0.0.5

semver versions

unaffected

unknown

Other versions: unknown

Product identifiers (CPE)cpe:2.3:a:ibm:mq:9.2.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:mq:9.3.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:mq:9.4.0.0:*:*:*:*:*:*:*
Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

This issue was addressed under Known Issue DT474627.

IBM MQ version 9.2 LTS

Apply cumulative security update 9.2.0.46 https://www.ibm.com/support/pages/downloading-ibm-mq-92-lts

IBM MQ version 9.3 LTS

Apply cumulative security update 9.3.0.43 https://www.ibm.com/support/pages/downloading-ibm-mq-93-lts

IBM MQ version 9.4 LTS

Apply fix pack 9.4.0.30 https://www.ibm.com/support/pages/downloading-ibm-mq-94

IBM MQ version 10.0.LTS

Upgrade to IBM MQ version 10.0.0.6 https://www.ibm.com/support/pages/downloading-ibm-mq-100

IBM MQ version 9.4 CD and 10.0 CD

Upgrade to IBM MQ version 10.0.1.0 https://www.ibm.com/support/pages/downloading-ibm-mq-100

ibm guidance ↗

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

IBM MQ 9.2.0.0 through 9.2.0.44 LTS, 9.3.0.0 through 9.3.0.42 LTS, 9.4.0.0 through 9.4.0.26 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 through 10.0.0.5 LTS and CD Managed File Transfer could allow an authenticated attacker to obtain sensitive information or cause a denial of service due to improper restriction of XML external entity references in command queue processing.

References

1 sources
www.ibm.com/support/pages/node/7294654
Vendor advisoryibm

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-13271

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-611 ↗

CWE-611 Improper Restriction of XML External Entity Reference

ibm

Related →
Contributing organizations · 2
ibm

Assigning organization

2026-11-04
CISA-ADP

Additional data publisher

2026-11-09

Timeline

All times UTC

  1. Advisory published

    Publication date supplied by the source.

  2. Source updated

    Latest modification date supplied by the source.

  3. Last imported by cve.new

    Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes
  1. CVE · CVE-2026-13271

    Observed 2026-11-09T21:00:46.511Z · upstream updated 2026-11-09T20:52:19.791Z

    Prioritization updated

    before

    []

    after

    [
  {
    "source": "CISA-ADP",
    "type": "SSVC",
    "role": "CISA Coordinator",
    "timestamp": "2026-11-09T20:52:09.419114Z",
    "decisions": [
      {
        "name": "Exploitation",
        "value": "none"
      },
      {
        "name": "Automatable",
        "value": "no"
      },
      {
        "name": "Technical Impact",
        "value": "total"
      }
    ]
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.