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Medium, CVSS 4.8amended

@workos-inc/authkit-nextjs session replay vulnerability

CVE-2024-29901GHSA-35w3-6qhc-474v

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (@workos-inc/authkit-nextjs 0.4.2), redeploy, then verify what is actually installed.

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.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
4.8 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS
  • CVE-2024-29901: 0.66% estimated exploitation activity in the next 30 days; percentile 51.56 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Impact A user can reuse an expired session by controlling the x-workos-session header. Patches Patched in https://github.com/workos/authkit-nextjs/releases/tag/v0.4.2

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-35w3-6qhc-474v

  2. Revision 1 · created ·

    Published from osv record GHSA-35w3-6qhc-474v

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-2024-29901

Advisory: @workos-inc/authkit-nextjs session replay vulnerability
IDs: CVE-2024-29901, GHSA-35w3-6qhc-474v
Record: https://patchnext.com/advisories/cve-2024-29901 (revision 2, source checked 26 Oct 2026, 12:30 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @workos-inc/authkit-nextjs 0.4.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @workos-inc/authkit-nextjs: affected < 0.4.2; fixed in 0.4.2

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

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on @workos-inc/authkit-nextjs.
- 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-35w3-6qhc-474v (OSV record GHSA-35w3-6qhc-474v lists affected ranges: npm @workos-inc/authkit-nextjs >=0 <0.4.2 (fixed))
- Verified: https://github.com/advisories/GHSA-35w3-6qhc-474v (GitHub-reviewed advisory GHSA-35w3-6qhc-474v lists affected ranges: npm @workos-inc/authkit-nextjs >=0 <0.4.2)

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