Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV N L P N N N N H 8.2 .0040 33.5 —
AFFECTED Product Versions Fixed rouille 0.1.6 – —
TIMELINE Jul 27 Reserved by VulnCheck Jul 28 Published (CNA: VulnCheck) Jul 29 EXPLOIT PUBLISHED — CVE-2026-66754 (tomaka rouille). Public exploit reference added.
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.
| Date | Event | Detail |
|---|---|---|
| July 27, 2026 | Reserved | Reserved by VulnCheck |
| July 28, 2026 | Published | Published (CNA: VulnCheck) |
| July 29, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-66754 (tomaka rouille). Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| tomaka | rouille | — | 0.1.6 | — |
Authoritative record: CVE-2026-66754 at cve.org
Vendors: tomaka
Weaknesses: CWE-617
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-66754 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.