CVE-2026-39825

Published: Mag 07, 2026 Last Modified: Mag 09, 2026

ExploitDB:

Other exploit source:

Google Dorks:

MEDIUM 5,3

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Attack Vector: network

Attack Complexity: low

Privileges Required: none

User Interaction: none

Scope: unchanged

Confidentiality: low

Integrity: none

Availability: none

Description

AI Translation Available

ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewrite function, or a Director function which parses query parameters, ReverseProxy sanitizes the forwarded request to remove query parameters which are not parsed by url.ParseQuery. ReverseProxy does not take ParseQuery's limit on the total number of query parameters (controlled by GODEBUG=urlmaxqueryparams=N) into account. This can permit ReverseProxy to forward a request containing a query parameter that is not visible to the Rewrite function. For example, the query 'a1=x&a2=x&...&a10000=x&hidden=y' can forward the parameter 'hidden=y' while hiding it from the proxy's Rewrite function.