CVE-2026-8431: An administrative user with access to configure webhooks can execute arbitrary commands by configuring and the

Routine

HIGH 7.2UPGRADE

CVE-2026-8431 is a high-severity flaw (CVSS 7.2) affecting ops manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An administrative user with access to configure webhooks can execute arbitrary commands by configuring and then triggering webhooks containing specific FreeMarker template syntax. This issue affects all MongoDB Ops Manager 7.0 versions and MongoDB Ops Manager versions 8.0.22 and prior.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-77
Published	2026-05-12
Last modified	2026-10-26

Publisher (CNA): MongoDB, Inc. · Vendor: mongodb

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-12 19:16 UTCPublished CVE record published
2026-10-26 18:10 UTCUpdated Record last modified

mongodb ops manager UPGRADE

Affected: >= 7.0.0 and < 8.0.23

Fixed in: 8.0.23

Safe to downgrade to: a release before 7.0.0

1. Check installed version

apt-cache policy ops-manager || rpm -q ops-manager || ops-manager --version

2. UPGRADE to 8.0.23 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ops-manager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ops-manager

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 7.0.0 (Debian / Ubuntu)

apt-cache madison ops-manager sudo apt install ops-manager=<VERSION_BEFORE_7.0.0> sudo apt-mark hold ops-manager

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

dnf --showduplicates list ops-manager sudo dnf downgrade ops-manager-<VERSION_BEFORE_7.0.0> sudo dnf versionlock add ops-manager

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-2026-8431?

ops manager: upgrade to 8.0.23. Exact commands for each OS are on this page.

Is CVE-2026-8431 being exploited?

CVE-2026-8431 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-2026-8431 affect?

CVE-2026-8431 affects ops manager. Severity is high (CVSS 7.2). An administrative user with access to configure webhooks can execute arbitrary commands by configuring and then triggering webhooks containing specific FreeMarker template syntax. This issue affects all MongoDB Ops Manager 7.0 versions

How urgent is CVE-2026-8431?

Priority 33/100. High severity

Software pages

MongoDB vulnerabilities

Related CVEs

CVE-2026-87108 LOW 3.1 UPGRADE An authenticated Ops Manager user with a read-only project role can retrieve a daily host monitoring record as
CVE-2026-87109 MEDIUM 5.3 UPGRADE An authenticated Ops Manager organization member can retrieve another member's pending authenticator enrollmen
CVE-2026-87110 MEDIUM 5.3 UPGRADE An unauthenticated user with network access to the Ops Manager web port can repeatedly request monitoring endp

References

← Back to latest CVEs