EUVD-2026-62544Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Network-delivered CSRF with no attacker privileges (PR:N) requires victim link click (UI:R); impact confined to TOTP overwrite (I:L) and temporary 2FA lockout (A:L) with no confidentiality exposure.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
Cross-site request forgery in Grav Login Plugin prior to 3.8.11 allows a network attacker to silently overwrite a logged-in victim's TOTP two-factor authentication secret by inducing a single link click. The taskRegenerate2FASecret endpoint accepted top-level GET requests with no nonce, Origin, or Referer validation; under the browser-default SameSite=Lax cookie policy, this is sufficient for a cross-site navigation to carry the victim's session cookie and trigger secret regeneration. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must have an active, valid Grav Login Plugin session cookie under the browser-default SameSite=Lax cookie policy. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 5.4 (Medium, AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L) accurately reflects the attack profile: network-delivered, low complexity, no attacker privileges, but requiring user interaction. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to Grav Login Plugin version 3.8.11, the vendor-confirmed fix available at https://github.com/getgrav/grav-plugin-login/releases/tag/3.8.11. … Detailed patch versions, workarounds, and compensating controls in full report. |
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More in Grav Plugin Login
View allSame weakness CWE-352 – Cross-Site Request Forgery (CSRF)
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External POC / Exploit Code
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