CVE-2026-89030Network attack vector

User email disclosure via unrestricted AJAX search

Published Sep 16, 2026 · Updated Sep 16, 2026

Information exposure in Adenion Blog2Social before 9.1.0 allows remote authenticated users to retrieve registered users' email addresses. The b2s_search_user AJAX handler calls B2S_Tools::searchUser(), which returns every matching user's email address without checking the list_users capability. Any account with edit_posts can enumerate email addresses, including those belonging to administrators, but no data modification is reported.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Adenion Blog2Social before 9.1.0 allows remote authenticated users to retrieve registered users' email addresses. The b2s_search_user AJAX handler calls B2S_Tools::searchUser(), which returns every matching user's email address without checking the list_users capability. Any account with edit_posts can enumerate email addresses, including those belonging to administrators, but no data modification is reported.

The record

CVE
CVE-2026-89030
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
Adenion GmbH
Product
Blog2Social
Classifications
T1087
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=0 <9.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Adenion GmbH · Blog2Socialversion=0 <9.1.0

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1087Account Discovery

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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