HTTP Request Smuggling Affecting varnish-cache package, versions [,7.6.2)
Threat Intelligence
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-UNMANAGED-VARNISHCACHE-9669341
- published8 Apr 2025
- disclosed17 Mar 2025
- creditUnknown
Introduced: 17 Mar 2025
CVE-2025-30346 (opens in a new tab)How to fix?
Upgrade varnish-cache to version 7.6.2 or higher.
Overview
Affected versions of this package are vulnerable to HTTP Request Smuggling through the handling of HTTP/1 requests in the cnt_recv() function. An attacker can manipulate the state of HTTP sessions by sending a request containing multiple Host headers or multiple Content-Length headers.