Unauthenticated account takeover via unbound LINE identity
Published May 15, 2026 · Updated May 15, 2026
Authentication bypass in Form Notify for Any Forms 1.1.10 and earlier allows remote attackers to access arbitrary WordPress accounts. The LINE OAuth callback selects a local account by email without binding the LINE subject identifier to that account; earlier builds also accept the form_notify_line_email cookie when LINE omits an email. A LINE OAuth flow with an attacker-controlled identity is required, and targeting an administrator account grants control of the WordPress site.
Summary
What happened
Authentication bypass in Form Notify for Any Forms 1.1.10 and earlier allows remote attackers to access arbitrary WordPress accounts. The LINE OAuth callback selects a local account by email without binding the LINE subject identifier to that account; earlier builds also accept the form_notify_line_email cookie when LINE omits an email. A LINE OAuth flow with an attacker-controlled identity is required, and targeting an administrator account grants control of the WordPress site.
The record
- CVE
- CVE-2026-5229
- Published
- May 15, 2026
- Updated
- May 15, 2026
- Vendor
- Oberon Lai
- Product
- Form Notify for Any Forms
- Classifications
- CWE-287, T1078
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 15, 2026CVE publishedPublication date reported by the CVE source.
- May 15, 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.
- Affected versionversion=0 <=1.1.10
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Public exploit references
- Form Notify LINE OAuth authentication-bypass proof of conceptproof of concept · unverified
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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