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 PR UI S C I A CVSS EPSS %ile KEV N L N N U H N N 7.5 .0094 58.2 —
AFFECTED Product Versions Fixed n/a n/a – —
TIMELINE Nov 28 Reserved by mitre Jun 22 EXPLOIT PUBLISHED — CVE-2025-66389. Public exploit reference added. Jun 22 Published (CNA: mitre)
GitHub Copilot 1.372.0 allows filesystem access outside of a workspace folder (without user approval) via a file-handler URI parameter to fetch_webpage. Therefore, exfiltration could occur if there is indirect prompt injection.
| Date | Event | Detail |
|---|---|---|
| November 28, 2025 | Reserved | Reserved by mitre |
| June 22, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2025-66389. Public exploit reference added. |
| June 22, 2026 | Published | Published (CNA: mitre) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| n/a | n/a | — | n/a | — |
Authoritative record: CVE-2025-66389 at cve.org
Weaknesses: CWE-552
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-66389 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.