Vulnerability details
CVE-2026-64682
NauelG astro-blocks
AstroBlocks: Admin session tokens can be forged due to a hard-coded fallback JWT secret and a mismatched environment variable name
CVSS 3.1
9.8Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.8Critical | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| NauelG | astro-blocks | < 3.4.0 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://github.com/NauelG/astro-blocks/security/advisories/GHSA-mfcg-m7j5-7v72 x_refsource_CONFIRM
- https://github.com/NauelG/astro-blocks/pull/51 x_refsource_MISC
- https://github.com/NauelG/astro-blocks/commit/fd83bf0b37a756363f718e134c16e448da09a74d x_refsource_MISC
- https://github.com/NauelG/astro-blocks/releases/tag/v3.4.0 x_refsource_MISC
Kolun on Telegram @kolunsec
Exploited CVEs, key news and a daily digest
Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.
Details
- Published
- 2026-11-11
- Last updated
- 2026-11-11
- State
- Published
- Assigner (CNA)
- GitHub_M
- Kolun priority
- 27 · Low
Exploit prediction (EPSS)
0.57%
Probability of exploitation in 30 days
48%
Percentile (among all CVEs)
Weaknesses (CWE)
- CWE-321Use of Hard-coded Cryptographic Key
- CWE-798Use of Hard-coded Credentials