Reachable Assertion Affecting rust-rouille package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.56% (45th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-RUSTROUILLE-18384624
  • published29 Jul 2026
  • disclosed28 Jul 2026

Introduced: 28 Jul 2026

CVE-2026-66754  (opens in a new tab)
CWE-617  (opens in a new tab)

How to fix?

There is no fixed version for Debian:unstable rust-rouille.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rust-rouille package and not the rust-rouille package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Rouille 0.1.6 through 3.6.2 contains a reachable assertion vulnerability in the Request::remove_prefix function that allows remote unauthenticated attackers to crash the server by sending a crafted percent-encoded URL. Attackers can send a request whose decoded path matches a configured prefix while the raw percent-encoded path does not, causing the assert! to fail and triggering either a 500 error or full process termination depending on the panic configuration.

CVSS Base Scores

version 3.1