CVE-2026-55602 | BDVDB-2026-342149 Detail

Description#

http-proxy-middleware is node.js http-proxy middleware. From 0.16.0 until 2.0.10, 3.0.6, and 4.1.0, http-proxy-middleware documents router proxy-table entries as host, path, or host+path selectors, but the host+path implementation uses unanchored substring matching on attacker-controlled request metadata. As a result, a crafted Host header that is only a superstring match for a configured host+path key can still route a request to an unintended backend. This vulnerability is fixed in 2.0.10, 3.0.6, and 4.1.0.

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History#

1. Version 12026-06-22Record published in the CVE List.
2. Version 22026-06-23Most recent update recorded in the CVE List.