Open-Source Security Intelligence

Know every vulnerability
before it knows you.

DevGuard continuously monitors your dependencies and alerts you when CVEs like this one affect your stack — with real-time threat intelligence built for developers.

Checkout DevGuardView on GitHub
Search

GHSA-vxf5-wxwp-m7g9

MediumCVSS 6.9 / 10
Published Aug 12, 2021·Last modified Mar 13, 2026
Affected Components(0)

No affected components available

Description

Next.js is an open source website development framework to be used with the React library. In affected versions specially encoded paths could be used when pages/_error.js was statically generated, allowing an open redirect to occur to an external site. In general, this redirect does not directly harm users although it can allow for phishing attacks by redirecting to an attacker's domain from a trusted domain.

Impact

  • Affected: Users of Next.js between 10.0.5 and 10.2.0
  • Affected: Users of Next.js between 11.0.0 and 11.0.1 using pages/_error.js without getInitialProps
  • Affected: Users of Next.js between 11.0.0 and 11.0.1 using pages/_error.js and next export
  • Not affected: Deployments on Vercel (vercel.com) are not affected
  • Not affected: Deployments with pages/404.js
  • Note that versions prior to 0.9.9 package next npm package hosted a different utility (0.4.1 being the latest version of that codebase), and this advisory does not apply to those versions.

We recommend upgrading to the latest version of Next.js to improve the overall security of your application.

Patches

https://github.com/vercel/next.js/releases/tag/v11.1.0

Risk Scores
Base Score
6.9

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 does not need any special privileges or access rights. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a low impact on the integrity of the data.

Threat Intelligence
6.3

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

EPSS
1.20%

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.

Browse More

Medium severity
Scan your project

Continuously monitor your dependencies and get alerted when vulnerabilities like this one affect your stack.

Checkout DevGuard