CVE-2026-100667
published 2026-09-26CVE-2026-100667: grav-plugin-login (the Grav CMS Login plugin) versions >= 3.8.7 and < 3.9.7 allow the two-factor authentication challenge to be bypassed for content gated by…
PriorityP432medium5.3CVSS 3.1
AVNACLPRNUINSUCLINAN
EPSS
0.31%
22.4th percentile
grav-plugin-login (the Grav CMS Login plugin) versions >= 3.8.7 and < 3.9.7 allow the two-factor authentication challenge to be bypassed for content gated by the authenticated() Twig function or the [authenticated] shortcode. On sites with 2FA enabled, Login::isAuthenticated() checked only the session flag indicating that the password step had succeeded, not the flag indicating that login had completed, so a session sitting at the 2FA code prompt was treated as fully authenticated. An attacker who knows a member's password but cannot answer that member's second factor can therefore read member-only content rendered by the no-argument authenticated() or group authenticated(null, 'group') forms and by [authenticated]; the inverse [guest] shortcode is likewise evaluated too early. Impact is limited to disclosure of that content: the attacker does not obtain a completed session, cannot access pages protected by an access: rule, and cannot act as the user. The authenticated('some.permission') form, which goes through UserObject::authorize(), is not affected. Fixed in grav-plugin-login 3.9.7.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| getgrav | grav | >= 3.8.7 < 3.9.7 | 3.9.7 |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
nvdv4.06.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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VulDB
Getgrav Login Plugin up to 3.9.6 Two-Factor Authentication Login::isAuthenticated improper authorization
vuldb·2026-09-26·CVSS 5.3
CVE-2026-100667 [MEDIUM] Getgrav Login Plugin up to 3.9.6 Two-Factor Authentication Login::isAuthenticated improper authorization
A vulnerability has been found in Getgrav Login Plugin up to 3.9.6 and classified as problematic. The affected element is the function Login::isAuthenticated of the component Two-Factor Authentication. The manipulation leads to improper authorization.
This vulnerability is referenced as CVE-2026-100667. Remote exploitation of the attack is possible. No exploit is available.
The affected component should be upgraded.
GHSA
grav-plugin-login (the Grav CMS Login plugin) versions >= 3.8.7 and < 3.9.7 allow the two-factor authentication challenge to be bypassed for content gated by the authenticated() Twig function or the [
ghsa_unreviewed·2026-09-26
CVE-2026-100667 [MEDIUM] CWE-304 grav-plugin-login (the Grav CMS Login plugin) versions >= 3.8.7 and < 3.9.7 allow the two-factor authentication challenge to be bypassed for content gated by the authenticated() Twig function or the [
grav-plugin-login (the Grav CMS Login plugin) versions >= 3.8.7 and < 3.9.7 allow the two-factor authentication challenge to be bypassed for content gated by the authenticated() Twig function or the [authenticated] shortcode. On sites with 2FA enabled, Login::isAuthenticated() checked only the session flag indicating that the password step had succeeded, not the flag indicating that login had completed, so a session sitting at the 2FA code prompt was treated as fully authenticated. An attacker who knows a member's password but cannot answer that member's second factor can therefore read member-only content rendered by the no-argument authenticated() or group authenticated(null, 'group') forms and by [authenticated]; the inverse [guest] shortcode is likewise evaluated too early. Impact is l
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-09-26
Published