Open Redirect Affecting @astrojs/node package, versions <9.4.1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-ASTROJSNODE-11951436
- published17 Aug 2025
- disclosed15 Aug 2025
- creditFlorian Lefebvre
Introduced: 15 Aug 2025
NewCVE-2025-55207 (opens in a new tab)How to fix?
Upgrade @astrojs/node to version 9.4.1 or higher.
Overview
@astrojs/node is a Deploy your site to a Node.js server
Affected versions of this package are vulnerable to Open Redirect via the trailingSlash configuration in standalone mode with the Node deployment adapter. An attacker can redirect users to external sites by crafting URLs with double slashes, potentially leading to credential theft, malware distribution, or phishing attacks.
Note:
This is only exploitable if the Node deployment adapter is used in standalone mode and trailingSlash is set to "always" in the configuration.