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 N N N N N H 8.7 .0060 45.9 —
AFFECTED Product Versions Fixed facil.io 0.6.0 – —
TIMELINE Jul 27 Reserved by VulnCheck Jul 27 Published (CNA: VulnCheck) Jul 30 EXPLOIT PUBLISHED — CVE-2026-66730 (boazsegev facil.io). Public exploit reference added.
facil.io 0.6.0 through 0.7.6 contains a denial-of-service vulnerability in the multipart body parser that allows an unauthenticated remote attacker to permanently freeze worker processes at 100% CPU by sending a multipart/form-data request with a partial closing boundary. The missing progress guard in the parser loop causes http_mime_parse to return 0 bytes consumed without setting done or error flags, causing the calling loop to re-invoke the parser on the same buffer indefinitely, exhausting all workers and permanently disabling the server until manually restarted.
| Date | Event | Detail |
|---|---|---|
| July 27, 2026 | Reserved | Reserved by VulnCheck |
| July 27, 2026 | Published | Published (CNA: VulnCheck) |
| July 30, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-66730 (boazsegev facil.io). Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| boazsegev | facil.io | — | 0.6.0 | — |
Authoritative record: CVE-2026-66730 at cve.org
Vendors: boazsegev
Weaknesses: CWE-835
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-66730 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.