CVE-2026-84376Astro: Authorization bypass from missing path-segment boundary check when stripping the configured base
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Astro is a web framework for content-driven websites. Prior to 7.2.4, Astro stripped a configured non-root base path from request pathnames using a string-prefix check without verifying a path-segment boundary. With base "/app", a request to "/appX/admin" resolved internally to the protected "/admin" route while middleware observed "/appX/admin" in context.url.pathname. In applications that authorize base-prefixed routes by inspecting context.url.pathname, an unauthenticated remote attacker could bypass pathname-based middleware authorization and reach protected routes. This issue is fixed in version 7.2.4.
- CVSS
- 6.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-187
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Sep 4, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
withastro astro withastro:astro (from the name) | before 7.2.4 | CNA record |
References
- https://github.com/withastro/astro/security/advisories/GHSA-376h-93r7-7g6fx-refsource-confirm
- https://github.com/withastro/astro/pull/17701x-refsource-misc
- https://github.com/withastro/astro/commit/05763a0884aabb1da78a2749d5bb9d41ae620527x-refsource-misc
- https://github.com/withastro/astro/releases/tag/astro@7.2.4x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.