CVE-2026-12660: IBM MQ Web Console could allow an authenticated administrator to write files outside the intended directory du

Routine

LOW 2.7UPGRADEDOWNGRADE

CVE-2026-12660 is a low-severity flaw (CVSS 2.7) affecting mq operator, supplied mq advanced container images. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM MQ Web Console could allow an authenticated administrator to write files outside the intended directory due to improper path validation.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	2.7 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-10-19
Last modified	2026-10-23

Publisher (CNA): IBM Corporation · Vendor: ibm

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-19 17:17 UTCPublished CVE record published
2026-10-23 17:23 UTCUpdated Record last modified

ibm mq operator UPGRADE

Affected: >= 2.0.0 and <= 2.0.29 · >= 3.2.0 and <= 3.2.29 · 3.3.0 · 3.4.0 · 3.4.1 · 3.5.0 · 3.5.1 · 3.5.2

Fixed in: newer than 3.2.29

Safe to downgrade to: a release before 2.0.0

1. Check installed version

apt-cache policy mq-operator || rpm -q mq-operator || mq-operator --version

2. UPGRADE to newer than 3.2.29 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mq-operator

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mq-operator

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)

apt-cache madison mq-operator sudo apt install mq-operator=<VERSION_BEFORE_2.0.0> sudo apt-mark hold mq-operator

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mq-operator sudo dnf downgrade mq-operator-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add mq-operator

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

ibm supplied mq advanced container images DOWNGRADE

Affected: 9.4.1.0 r1 · 9.4.1.0 r2 · 9.4.1.1 r1 · 9.4.2.0 r1 · 9.4.2.0 r2 · 9.4.2.1 r1 · 9.4.2.1 r2 · 9.4.3.0 r1

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.3.0.0

1. Check installed version

apt-cache policy supplied-mq-advanced-container-images || rpm -q supplied-mq-advanced-container-images || supplied-mq-advanced-container-images --version

2. No fixed release: DOWNGRADE to a release before 9.3.0.0 (Debian / Ubuntu)

apt-cache madison supplied-mq-advanced-container-images sudo apt install supplied-mq-advanced-container-images=<VERSION_BEFORE_9.3.0.0> sudo apt-mark hold supplied-mq-advanced-container-images

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list supplied-mq-advanced-container-images sudo dnf downgrade supplied-mq-advanced-container-images-<VERSION_BEFORE_9.3.0.0> sudo dnf versionlock add supplied-mq-advanced-container-images

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-12660?

mq operator: upgrade to newer than 3.2.29; supplied mq advanced container images: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-12660 being exploited?

CVE-2026-12660 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-12660 affect?

CVE-2026-12660 affects mq operator, supplied mq advanced container images. Severity is low (CVSS 2.7). IBM MQ Web Console could allow an authenticated administrator to write files outside the intended directory due to improper path validation.

How urgent is CVE-2026-12660?

Priority 13/100. No elevated risk signals yet.

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References

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