Improper authentication in m615926 Receive Notifications After Form Submitting – Form…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287.
Summary
The Form Notify plugin for WordPress is vulnerable to Authentication Bypass in versions up to and including 1.1.10. This is due to the plugin trusting user-controlled cookie data to determine which WordPress account to authenticate after a LINE OAuth login. When LINE doesn't provide an email address (which is common), the plugin falls back to reading the 'form_notify_line_email' cookie value without verifying that the LINE account is associated with that email address. This makes it possible for unauthenticated attackers to gain access to any user account on the site, including administrator accounts, by completing a LINE OAuth flow with their own LINE account while injecting a malicious cookie containing the target victim's email address.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-5229
- 2026-10-03 Alias added: GHSA-6cpv-j32f-rqmr
References
Other 10
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2f0a7d6f-9b95-4052-bab3-85aca01f6ab7?source=cve
- https://plugins.trac.wordpress.org/browser/form-notify/trunk/src/APIs/Line/Login/User.php#L72
- https://plugins.trac.wordpress.org/browser/form-notify/tags/1.1.08/src/APIs/Line/Login/User.php#L72
- https://plugins.trac.wordpress.org/browser/form-notify/trunk/src/APIs/Line/Login/Route.php#L116-L118
- https://plugins.trac.wordpress.org/browser/form-notify/tags/1.1.08/src/APIs/Line/Login/Route.php#L116-L118
- https://plugins.trac.wordpress.org/browser/form-notify/trunk/src/APIs/Line/Login/User.php#L53
- https://plugins.trac.wordpress.org/browser/form-notify/tags/1.1.08/src/APIs/Line/Login/User.php#L53
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3517908%40form-notify&new=3517908%40form-notify&sfp_email=&sfph_mail=
- https://github.com/oberonlai/form-notify/commit/5eab0ea
- https://github.com/oberonlai/form-notify/commit/9780764
Sources
- CVE-2026-5229 · CVE Program
- CVE-2026-5229 · NVD
- FIRST EPSS
- GHSA-6cpv-j32f-rqmr · GitHub Advisory Database · CC BY 4.0
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