CVE-2026-62671Network attack vector

Forced 2FA re-enrollment via CSRF

Published Aug 19, 2026 · Updated Aug 19, 2026

Cross-site request forgery in Grav Login Plugin before 3.8.11 allows remote attackers to force 2FA re-enrollment via cross-site navigation. The login.regenerate2FASecret task accepts the task URI parameter on a top-level GET and reaches taskRegenerate2FASecret without a login-form nonce or Origin/Referer validation, which replaces the authenticated session user's persisted TOTP secret. Exploitation requires a victim with an active session and 2FA enabled under the default SameSite=Lax cookie policy, and it disrupts access for that account without exposing the new secret to the attacker.

CVSS severity5.4
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cross-site request forgery in Grav Login Plugin before 3.8.11 allows remote attackers to force 2FA re-enrollment via cross-site navigation. The login.regenerate2FASecret task accepts the task URI parameter on a top-level GET and reaches taskRegenerate2FASecret without a login-form nonce or Origin/Referer validation, which replaces the authenticated session user's persisted TOTP secret. Exploitation requires a victim with an active session and 2FA enabled under the default SameSite=Lax cookie policy, and it disrupts access for that account without exposing the new secret to the attacker.

The record

CVE
CVE-2026-62671
Published
Aug 19, 2026
Updated
Aug 19, 2026
Vendor
Grav
Product
Grav Login Plugin
Classifications
CWE-352, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.8.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Grav · Grav Login Pluginversion=< 3.8.11

Published CVSS scores

5.4GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo