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CVE-2026-66754 is a reachable assertion vulnerability in the Rust web framework Rouille, affecting versions 0.1.6 through 3.6.2. Request::remove_prefix can fail an assertion when a request's decoded path matches a configured prefix but its raw percent-encoded path does not. A remote unauthenticated attacker can trigger this condition with a crafted URL, causing an HTTP 500 error or full process termination depending on the application's panic configuration.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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A denial-of-service vulnerability in rouille's remove_prefix function that allows remote unauthenticated attackers to crash the server with a crafted percent-encoded URL.
A denial-of-service vulnerability in the Rouille Rust web framework's Request::remove_prefix function, where a crafted percent-encoded URL can trigger a reachable assertion and crash the server or terminate the process.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.