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Vulnerability record · CVE-2026-62669 · published 19 August 2026

CVE-2026-62669: Improper authentication vulnerability

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 checks only that the pending-session user exists rather than requiring $user->authorized. After submitting a victim's correct password, an attacker can invoke taskRegenerate2FASecret() during the pending TOTP challenge, overwrite twofa_secret, read the replacement secret from the response, calculate a valid code, and complete authentication without the victim's second factor. This issue is fixed in version 3.8.11.

7.4 CVSS 3.1 High EPSS 0.50% · top 59.5% CWE-287 · Improper authentication Deferred
7.4CVSS 3.1 base score
0.50%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
9 Sep 2026Last modified by NVD

Description

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 checks only that the pending-session user exists rather than requiring $user->authorized. After submitting a victim's correct password, an attacker can invoke taskRegenerate2FASecret() during the pending TOTP challenge, overwrite twofa_secret, read the replacement secret from the response, calculate a valid code, and complete authentication without the victim's second factor. This issue is fixed in version 3.8.11.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

LinkTags
https://github.com/getgrav/grav-plugin-login/commit/5d1b722298cb947d8f434025d121b99152a2c630
https://github.com/getgrav/grav-plugin-login/releases/tag/3.8.11
https://github.com/getgrav/grav/security/advisories/GHSA-7mgc-c7pq-3rr3

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Source: NIST National Vulnerability Database (record CVE-2026-62669), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.