Skip to content
Patch Next
Sign inAdd to your agent

← Actionable
Medium, CVSS 6.6amended

Clerk-js vulnerable to bypass of OAuth authentication flow by manipulating request at OTP verification stage

CVE-2025-63700GHSA-3mm3-wfpv-q85g

What to do

Vendor response not established. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

Add to your agent

Affected packages

  • npm @clerk/clerk-js

    Affected
    <= 5.88.0
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
6.6 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U · score source
EPSS
No dated EPSS signal available.
Source description

As published by the source; long descriptions are shortened.

An issue was discovered in Clerk-js 5.88.0 allowing attackers to bypass the OAuth authentication flow by manipulating the request at the OTP verification stage.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-3mm3-wfpv-q85g

  2. Revision 2 · amended ·

    Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

  3. Revision 1 · created ·

    Published from osv record GHSA-3mm3-wfpv-q85g

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2025-63700

Advisory: Clerk-js vulnerable to bypass of OAuth authentication flow by manipulating request at OTP verification stage
IDs: CVE-2025-63700, GHSA-3mm3-wfpv-q85g
Record: https://patchnext.com/advisories/cve-2025-63700 (revision 3, source checked 26 Oct 2026, 12:38 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.6)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @clerk/clerk-js: affected <= 5.88.0

## Suggested inspection (read-only)
- `npm ls @clerk/clerk-js --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on @clerk/clerk-js.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-3mm3-wfpv-q85g (OSV record GHSA-3mm3-wfpv-q85g lists affected ranges: npm @clerk/clerk-js >=0 <=5.88.0)
- Verified: https://github.com/advisories/GHSA-3mm3-wfpv-q85g (GitHub-reviewed advisory GHSA-3mm3-wfpv-q85g lists affected ranges: npm @clerk/clerk-js >=0 <=5.88.0)

Commands are suggestions: review each one before running it.

Loading voting…