CVE-2026-64682
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| astro-blocks NauelG |
< 3.4.0 (affected) | CNA: GitHub_M |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 9.8 critical |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CNA: GitHub_M |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/NauelG/astro-blocks/security/advisories/GHSA-mfcg-m7j5-7v72CNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/NauelG/astro-blocks/pull/51CNA: GitHub_M · x_refsource_MISC
- https://github.com/NauelG/astro-blocks/commit/fd83bf0b37a756363f718e134c16e448da09a74dCNA: GitHub_M · x_refsource_MISC
- https://github.com/NauelG/astro-blocks/releases/tag/v3.4.0CNA: GitHub_M · x_refsource_MISC
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