CVE-2026-41248
April 24, 2026, 9:16 p.m.
9.1
Critical
Description
Clerk JavaScript is the official JavaScript repository for Clerk authentication. createRouteMatcher in @clerk/nextjs, @clerk/nuxt, and @clerk/astro can be bypassed by certain crafted requests, allowing them to skip middleware gating and reach downstream handlers. This vulnerability is fixed in @clerk/astro 1.5.7, 2.17.10, and 3.0.15; @clerk/nextjs 5.7.6, 6.39.2, and 7.2.1; @clerk/nuxt 1.13.28 and 2.2.2; and @clerk/shared 2.22.1, 3.47.4, anc 4.8.1
Product(s) Impacted
| Vendor | Product | Versions |
|---|---|---|
| Clerk |
|
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
CWE-436
Interpretation Conflict
Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.
*CPE(s)
Affected systems and software identified for this CVE.
| Type | Vendor | Product | Version | Update | Edition | Language | Software Edition | Target Software | Target Hardware | Other Information |
|---|---|---|---|---|---|---|---|---|---|---|
| a | clerk | astro | 1.5.7 | / | / | / | / | / | / | / |
| a | clerk | astro | 2.17.10 | / | / | / | / | / | / | / |
| a | clerk | astro | 3.0.15 | / | / | / | / | / | / | / |
| a | clerk | nextjs | 5.7.6 | / | / | / | / | / | / | / |
| a | clerk | nextjs | 6.39.2 | / | / | / | / | / | / | / |
| a | clerk | nextjs | 7.2.1 | / | / | / | / | / | / | / |
| a | clerk | nuxt | 1.13.28 | / | / | / | / | / | / | / |
| a | clerk | nuxt | 2.2.2 | / | / | / | / | / | / | / |
| a | clerk | shared | 2.22.1 | / | / | / | / | / | / | / |
| a | clerk | shared | 3.47.4 | / | / | / | / | / | / | / |
| a | clerk | shared | 4.8.1 | / | / | / | / | / | / | / |
Tags
CVSS Score
CVSS Data - 3.1
- Attack Vector: NETWORK
- Attack Complexity: LOW
- Privileges Required: NONE
- Scope: UNCHANGED
- Confidentiality Impact: HIGH
- Integrity Impact: HIGH
- Availability Impact: NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Timeline
Published: April 24, 2026, 9:16 p.m.
Last Modified: April 24, 2026, 9:16 p.m.
Last Modified: April 24, 2026, 9:16 p.m.
Status : Received
CVE has been recently published to the CVE List and has been received by the NVD.
More infoSource
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.