CVE-2026-64682
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
CVSS
9.8
Critical
EPSS
0.6%
p48
KEV
—
Exploit Today
14
0-100
Published: Nov 11, 2026 · Last modified: Nov 11, 2026 · CWE-321 · CWE-798
Not enough EPSS history yet.
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.
- github.comhttps://github.com/NauelG/astro-blocks/commit/fd83bf0b37a756363f718e134c16e448da09a74d
- github.comhttps://github.com/NauelG/astro-blocks/pull/51
- github.comhttps://github.com/NauelG/astro-blocks/releases/tag/v3.4.0
- github.comhttps://github.com/NauelG/astro-blocks/security/advisories/GHSA-mfcg-m7j5-7v72