Incorrect Authorization Affecting @clerk/astro package, versions <1.5.7>=2.0.0 <2.17.10>=3.0.0 <3.0.15
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published17 Apr 2026
- disclosed16 Apr 2026
- creditChristiaan Swiers
Introduced: 16 Apr 2026
NewCVE-2026-41248 (opens in a new tab)How to fix?
Upgrade @clerk/astro to version 1.5.7, 2.17.10, 3.0.15 or higher.
Overview
@clerk/astro is a Clerk SDK for Astro
Affected versions of this package are vulnerable to Incorrect Authorization via the createPathMatcher() function in @clerk/shared used by downstream createRouteMatcher(). An attacker can gain unauthorized access to protected routes by crafting requests that bypass middleware checks and reach downstream handlers.
Workaround
This vulnerability can be mitigated by adding server-side authentication checks inside route handlers, server components, or server actions.