CVE-2026-87109Network attack vectorHinoki check available

MFA seed disclosure via user listings

Published Oct 9, 2026 · Updated Oct 9, 2026

Secret disclosure in MongoDB Ops Manager user listings allows remote authenticated users to read MFA seeds via user-listing requests. The endpoints return another member's pending authenticator enrollment seed rather than excluding that secret from listing responses. Exposure requires membership in the same organization or project and an unconfirmed enrollment; the supplied record establishes secret disclosure, not complete account takeover.

CVSS severityUnavailable
Unscored
EPSS probability0.23%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Secret disclosure in MongoDB Ops Manager user listings allows remote authenticated users to read MFA seeds via user-listing requests. The endpoints return another member's pending authenticator enrollment seed rather than excluding that secret from listing responses. Exposure requires membership in the same organization or project and an unconfirmed enrollment; the supplied record establishes secret disclosure, not complete account takeover.

The record

CVE
CVE-2026-87109
Published
Oct 9, 2026
Updated
Oct 9, 2026
Vendor
MongoDB
Product
Ops Manager
Classifications
T1552
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.0.0 <=7.0.23
  2. Affected versionversion=8.0.0 <8.0.27

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MongoDB · Ops Managerversion=7.0.0 <=7.0.23; version=8.0.0 <8.0.27

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

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