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GHSA-vqvc-9q8x-vmq6

HighCVSS 7.1 / 10
Published Aug 8, 2025·Last modified Aug 11, 2025
Affected Components(0)

No affected components available

Description

In versions before 0.7.0, @workos-inc/authkit-react-router exposed sensitive authentication artifacts — specifically sealedSession and accessToken by returning them from the authkitLoader. This caused them to be rendered into the browser HTML.

Impact

This information disclosure could lead to session hijacking in environments where cross-site scripting (XSS), malicious browser extensions, or local inspection is possible.

Patches

Patched in https://github.com/workos/authkit-react-router/releases/tag/v0.7.0

In patched versions:

  • sealedSession and accessToken are no longer returned by default from the authkitLoader.
  • A secure server-side mechanism is provided to fetch an access token as needed.
Risk Scores
Base Score
7.1

The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a low impact on the availability of the system.

Threat Intelligence
6.5

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.36%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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