CVE-2026-64682

CriticalCVSS 9.8/10Last modified Nov 12, 2026

Description

AstroBlocks is a block-first CMS for Astro projects. Prior to version 3.4.0, admin session tokens can be forged due to a hard-coded fallback JWT secret and a mismatched environment variable name. An attacker who knows the public fallback value (readable in the published package) can forge a valid session token with role: "owner" and obtain full administrative control of the CMS — creating/deleting content, users, media, redirects, and configuration. This issue has been patched in version 3.4.0.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-321CWE-798

Affected software

No affected versions have been published.

Timeline

Published
Nov 11, 2026
Last modified
Nov 12, 2026
NVD status
Deferred

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CVE-2026-64682: Critical severity, CVSS 9.8 | Vulnix