CVE-2026-89029

Blog2Social: Social Media Auto Post & Scheduler <= 9.0.0 - Authenticated (Subscriber+) Username Enumeration

2026-09-16 00:00

Strategic Overview

Status: Patched in 9.1.0
Affected Plugin: Blog2Social: Social Media Auto Post & Scheduler
Affected Version: <= 9.0.0
CVSS: 4.3Medium
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2026-89029

View all Blog2Social: Social Media Auto Post & Scheduler vulnerabilities

At a glance

CVE-2026-89029 is a medium-severity Missing Authorization vulnerability in the Blog2Social WordPress plugin, affecting versions <= 9.0.0. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 9.1.0; sites on affected versions should update now. Disclosed September 2026, reported by Choriyev Qahramon.

Vulnerability Overview

The Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress is vulnerable to username enumeration in all versions up to, and including, 9.0.0. This makes it possible for authenticated attackers, with Subscriber-level access and above, to enumerate users.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-862: Missing Authorization

Reaching this weakness in Blog2Social <= 9.0.0 takes an account at Subscriber level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Blog2Social the fix is 9.1.0: builds <= 9.0.0 are affected, anything from 9.1.0 onward is not.

Remediation

Update to version 9.1.0, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Blog2Social 9.1.0 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-89029 https://www.wordfence.com/threat-intel/vulnerabilities/id/6074ebd7-d44b-442f-bdef-532ddd865856 https://nvd.nist.gov/vuln/detail/CVE-2026-89029

Related records

Same weakness class

Other vulnerabilities in Blog2Social: Social Media Auto Post & Scheduler

CVSS Vector

4.3

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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