CVE-2026-8431

Ops Manager RCE via webhook body

Published May 12, 2026 CVSS 4.0 · 9.4 Critical EPSS < 1% KEV · Not listed
Description
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.

Analysis

AI-generated

Technical impact

A remote command execution flaw exists in MongoDB Ops Manager; administrators who can configure webhooks can embed FreeMarker template syntax that is executed on the server. The vulnerability is a classic command injection weakness (CWE‑77). An attacker who gains access to webhook configuration can run arbitrary shell commands with the privileges of the Ops Manager service, potentially compromising the entire server, its underlying OS, and any protected data.

Affected Systems

All MongoDB Ops Manager 7.0 releases and all Ops Manager versions 8.0.22 and earlier are affected. The flaw is present in the Ops Manager product from MongoDB, Inc. Versions newer than 8.0.22, including 8.0.23 and later, contain the fix as announced in the release notes.

Risk and Exploitability

The CVSS score of 9.4 marks this as a critical vulnerability, and the EPSS score is currently not available, but a lack of mitigation in the field makes exploitation likely. The vulnerability is not listed in the CISA KEV catalog. Attackers can trigger the flaw by creating a malicious webhook from an administrative account and then sending a request to activate it, which is a feasible attack vector for insiders or compromised administrators.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade MongoDB Ops Manager to version 8.0.23 or later, or any release that is newer than the affected 8.0.22 threshold.
  • In environments where an upgrade cannot be performed immediately, block external access to the /webhook endpoint and restrict webhook configuration to trusted users only.
  • If disabling webhooks temporarily is possible, configure Ops Manager to reject or sandbox all template rendering operations until a patch is applied.

Generated by OpenCVE AI on May 12, 2026 at 21:14 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:mongodb:ops_manager:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Mongodb
Mongodb ops Manager
Vendors & Products Mongodb
Mongodb ops Manager
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Ops Manager RCE via webhook body
Weaknesses CWE-77
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}

Weaknesses
  • CWE-77

    Improper Neutralization of Special Elements used in a Command ('Command Injection')

Sources

Status
PUBLISHED
Assigner
mongodb
Published
Updated
May 12, 2026, 8:24 PM
Reserved
May 12, 2026, 6:08 PM
Status
Analyzed
Published
May 12, 2026, 7:16 PM
Modified
Oct 26, 2026, 6:10 PM