CVE-2026-15964Public exploitNetwork attack vectorHinoki check available

Unauthenticated site takeover via unverified password reset

Published Aug 1, 2026 · Updated Aug 1, 2026

Authentication bypass in Single Sign On For TNG 2.0.0 and earlier allows remote attackers to take over WordPress sites via password reset. The unauthenticated ssoprocess_ajax handler accepts an attacker-supplied email for setnewpassword and calls reset_password without an ownership token, confirmation link, or capability check. A nonce exposed on every front-end page is shared by logged-out visitors, so changing an administrator password grants complete control of the site.

CVSS severity9.8
Critical
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authentication bypass in Single Sign On For TNG 2.0.0 and earlier allows remote attackers to take over WordPress sites via password reset. The unauthenticated ssoprocess_ajax handler accepts an attacker-supplied email for setnewpassword and calls reset_password without an ownership token, confirmation link, or capability check. A nonce exposed on every front-end page is shared by logged-out visitors, so changing an administrator password grants complete control of the site.

The record

CVE
CVE-2026-15964
Published
Aug 1, 2026
Updated
Aug 1, 2026
Vendor
Colin Stearman
Product
Single Sign On For TNG
Classifications
CWE-620, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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 <=2.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Colin Stearman · Single Sign On For TNGversion=0 <=2.0.0

Published CVSS scores

9.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-620Unverified Password Change
T1190Exploit Public-Facing Application

Public exploit references

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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