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9.8

AstroBlocks admin tokens can be forged for full control

CVE-2026-64682 · published 1 day ago
Summary

Versions of AstroBlocks before 3.4.0 use a hard‑coded secret for admin session tokens. Anyone who discovers this secret can create a token that appears to belong to an owner and take complete control of the CMS, including content, users, and settings. Update to version 3.4.0 or later to fix the problem.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
nauelg astro-blocks < 3.4.0
Original advisory text
AstroBlocks: Admin session tokens can be forged due to a hard-coded fallback JWT secret and a mismatched environment variable name
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.
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker full control (estimated)
Severity
9.8 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-321Use of Hard-coded Cryptographic Key
CWE-798Use of Hard-coded Credentials
Timeline
Published11 Nov 2026
Updated12 Nov 2026
First seen11 Nov 2026
Sources
CVE-2026-64682 · NVD
CVE-2026-64682 · MITRE
CVE-2026-64682 · OSV
GHSA-mfcg-m7j5-7v72 · GHSA
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