CVE-2026-82183Network attack vector

Account takeover via unverified Steam OpenID assertions

Published Sep 2, 2026 · Updated Sep 2, 2026

Improper authentication in miniOrange OAuth Single Sign On 6.25.0 through 7.0.0 allows remote attackers to take over non-admin accounts. The Steam single sign-on handler accepts an OpenID identity assertion without verifying it with Steam before selecting or provisioning the asserted WordPress user. The Steam login flow must be enabled and reachable; exploitation grants a non-admin WordPress session or provisions a new user.

CVSS severityUnavailable
Unscored
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in miniOrange OAuth Single Sign On 6.25.0 through 7.0.0 allows remote attackers to take over non-admin accounts. The Steam single sign-on handler accepts an OpenID identity assertion without verifying it with Steam before selecting or provisioning the asserted WordPress user. The Steam login flow must be enabled and reachable; exploitation grants a non-admin WordPress session or provisions a new user.

The record

CVE
CVE-2026-82183
Published
Sep 2, 2026
Updated
Sep 2, 2026
Vendor
miniOrange
Product
OAuth Single Sign On – SSO (OAuth Client)
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 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=6.25.0 <7.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

miniOrange · OAuth Single Sign On – SSO (OAuth Client)version=6.25.0 <7.0.1

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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

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

Your stack

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Your stack

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