Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Rails
Vendor reference — Rails · sector: Other. Cumulative disclosure record across the archive.
Career totals
| All-time | YTD | |
|---|---|---|
| CVEs | 4 | 3 |
| KEV entries | 1 | 0 |
| KEV/100 | Med CVSS | Med EPSS | C | H | M | L |
|---|---|---|---|---|---|---|
| 25.0 | 7.8 | .0141 | 1 | 2 | 1 | 0 |
KEV/100 = KEV entries ÷ CVEs × 100. Med CVSS / Med EPSS are medians over all disclosures. C/H/M/L = disclosures by CVSS severity band.
Monthly disclosures
Trend (by first-seen month, full archive): █▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁█▁▁▁██▁▁
| Month | New CVEs |
|---|---|
| 2025-11 | 0 |
| 2025-12 | 0 |
| 2026-01 | 0 |
| 2026-02 | 0 |
| 2026-03 | 1 |
| 2026-04 | 0 |
| 2026-05 | 0 |
| 2026-06 | 0 |
| 2026-07 | 1 |
| 2026-08 | 1 |
| 2026-09 | 0 |
| 2026-10 | 0 |
Notable CVEs
Ranked by the published formula: KEV → EPSS → CVSS → CVE ID.
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2019-5418 | 7.5 | 99.9 | HIGH | YES | 2019-03-27 |
| CVE-2026-66066 | 9.5 | 81.0 | CRITICAL | — | 2026-07-30 |
| CVE-2026-33195 | 8.0 | 52.4 | HIGH | — | 2026-03-23 |
| CVE-2026-73648 | 5.1 | 43.9 | MEDIUM | — | 2026-08-13 |
Recent CVEs
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2026-73648 | 5.1 | 43.9 | MEDIUM | — | 2026-08-13 |
| CVE-2026-66066 | 9.5 | 81.0 | CRITICAL | — | 2026-07-30 |
| CVE-2026-33195 | 8.0 | 52.4 | HIGH | — | 2026-03-23 |
| CVE-2019-5418 | 7.5 | 99.9 | HIGH | YES | 2019-03-27 |
KEV entries
| CVE | KEV added | CVSS | EPSS %ile | Severity |
|---|---|---|---|---|
| CVE-2019-5418 | 2025-07-07 | 7.5 | 99.9 | HIGH |
KEV timing
| CVE | Days |
|---|---|
| CVE-2019-5418 | 2294 |
| CVE | Due | Days over |
|---|---|---|
| CVE-2019-5418 | 2025-07-28 | 433 |
Methodology
Rate statistics are arithmetic over published figures: KEV/100 = KEV entries ÷ CVEs × 100; medians are taken over this vendor's disclosures. Vendor names are normalized (case, punctuation, common aliases) before aggregation; monthly counts are keyed to first-seen day, the day this archive first observed the record, not the upstream publication date.
Raw counts are not comparable across vendors: disclosure practices, product breadth, and CNA conventions differ widely, so a larger number here does not mean less secure software. This is a reference page assembled from the public record — not a record of its own, and not a ranking of vendors by our judgment.
Sources. CVE records from the CVE Program (cvelistV5); enrichment from NVD (NIST); known-exploited status from the CISA KEV catalog; exploit probability from FIRST EPSS.
