Grav: 2FA Bypass via 'login.regenerate2FASecret' - Secret Rotation During Pending Challenge — GHSA-7MGC-C7PQ-3RR3

Summary

### Summary When 2FA is enabled on an account, submitting correct credentials authenticates the user but leaves them unauthorized pending TOTP verification. During this pending-challenge window, the `login.regenerate2FASecret` task which requires only `$user->exists()`, not `$user->authorized` can be called without a CSRF nonce. It overwrites the victim's `twofa_secret` on disk with an attacker-chosen value,…

Timeline

Published by source

2026-09-02

Risk context

• Reported severity or threat level: high.
• Reported CVSS score: 7.4 out of 10.
• Reported EPSS value: 0.00386.
• Review exposure for the affected product or family: composer: getgrav/grav.

Product

composer: getgrav/grav

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

GHSA-7MGC-C7PQ-3RR3

Source

GitHub

Vendor

GitHub

Published by source

2026-09-02

Last source activity

2026-09-02

Additional identifiers

CVE-2026-62669

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.