CSRF in Getgrav Grav-Plugin-Login

CVE-2026-62671

Grav Login Plugin adds login, basic ACL, and session wide messages to Grav. Prior to 3.8.11, the Grav Login plugin login.regenerate2FASecret task accepts a top-level GET request through the TaskServiceProvider task: URI parameter without requiring a login-form nonce, an Origin check, or a Referer check. Under the default SameSite=Lax session cookie policy, an off-site navigation can invoke taskRegenerate2FASecret() in a logged-in victim's session, overwrite the victim's TOTP secret, and force two-factor re-enrollment. This issue is fixed in version 3.8.11.

Vulnerability class: CSRF (Cross-Site Request Forgery)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-62671?
CVE-2026-62671 is a medium-severity vulnerability in Getgrav Grav-Plugin-Login, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2026-08-19.
How severe is CVE-2026-62671?
Medium severity. CVSS v3 base score is 5.4 out of 10.