AstroBlocks: Admin session tokens can be forged due to a hard-coded fallback JWT secret and a mismatched environment variable name

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Summary

CVECVE-2026-64682
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-11 05:19:52 UTC
Updated2026-11-12 22:18:51 UTC
DescriptionAstroBlocks 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

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

Problem Types: CWE-321 | CWE-798 | CWE-321 CWE-321: Use of Hard-coded Cryptographic Key | CWE-798 CWE-798: Use of Hard-coded Credentials

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA NauelG Astro-blocks affected < 3.4.0 Not specified

References

ReferenceSourceLinkTags
github.com/NauelG/astro-blocks/security/advisories/GHSA-mfcg-m7j5-7v72 [email protected] github.com
github.com/NauelG/astro-blocks/commit/fd83bf0b37a756363f718e134c16e448da... [email protected] github.com
github.com/NauelG/astro-blocks/pull/51 [email protected] github.com
github.com/NauelG/astro-blocks/releases/tag/v3.4.0 [email protected] github.com
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