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CVE-2026-66400: grav 0 to before 3.8.13
CVE-2026-66400. CVSS 3.1 base score 4.8 (MEDIUM, Vendor/CNA). EPSS 0.00239 (percentile 0.14182), scored 22-Oct-2026.
Affected technology
grav · 0 to before 3.8.13
getgrav
Description’s affected range: versions before 3.8.13
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required
What an attacker can do
Attackers with a captured Remember Me cookie can authenticate indefinitely instead of the configured timeout period, as the expiry check compares an array to a scalar value which always evaluates incorrectly in PHP. Vendor/CNA’s CVSS 4.0 assessment (base score 6.3/10) rates confidentiality and integrity impact as low; availability impact as none.
- CWE
- CWE-613
- CCR priority
- 19.3 /100 (P5)
- CVSS 3.1
- 4.8 /10 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N · Vendor/CNA
- EPSS
- 0.00239 · percentile 0.14182 · 2026-10-22
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-66400.html