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VulnerabilityPublished Updated

CVE-2026-41248: clerk astro · Interpretation Conflict

Affects clerk astroSource CVE Database V5

0

Not known to be exploited · CVSS 9.1 Critical : upgrade to 3.0.15 or 1.5.7 as a priority.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 25% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.0.15, 1.5.7, 7.2.1 +7
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
clerkastroAffected
  • >=0.0.1 <1.5.7
  • >=2.0.0-snapshot.v20241206174604 <=2.17.9
  • >=3.0.0 <3.0.15
Fixed in
  • 3.0.15
  • 1.5.7
clerknextjsAffected
  • >=7.0.0 <7.2.1
Fixed in
  • 7.2.1
clerknextjsAffected
  • >=6.0.0-snapshot.vb87a27f <6.39.2
Fixed in
  • 6.39.2
clerknextjsAffected
  • >=5.0.0 <5.7.6
Fixed in
  • 5.7.6
clerknuxtAffected
  • >=2.0.0 <2.2.2
Fixed in
  • 2.2.2
clerknuxtAffected
  • >=1.1.0 <1.13.28
Fixed in
  • 1.13.28

AI-suggested

A fix is available and has been released in the following versions: @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, and 4.8.1. Users should upgrade to these or later versions to remediate the vulnerability. Patch status is confirmed by the vendor advisory embedded in the description. No additional mitigation steps are indicated.

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

References

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