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.
Libexpat
Product reference — Libexpat by Libexpat Project · sector: Other. Cumulative disclosure record for this product across the archive.
Product totals
| All-time | YTD | |
|---|---|---|
| CVEs | 18 | 18 |
| KEV entries | 0 | 0 |
| KEV/100 | Med CVSS | Med EPSS | C | H | M | L |
|---|---|---|---|---|---|---|
| 0.0 | 6.9 | .0017 | 0 | 4 | 14 | 0 |
KEV/100 = KEV entries ÷ CVEs × 100. Med CVSS / Med EPSS are medians over this product's disclosures. C/H/M/L = disclosures by CVSS severity band.
Monthly disclosures
Trend (by first-seen month, full archive): ▂█▁▃▁▁
| Month | New CVEs |
|---|---|
| 2026-05 | 1 |
| 2026-06 | 13 |
| 2026-07 | 0 |
| 2026-08 | 4 |
| 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-2026-66046 | 8.7 | 53.1 | HIGH | — | 2026-08-18 |
| CVE-2026-45186 | 7.5 | 39.2 | HIGH | — | 2026-05-10 |
| CVE-2026-76956 | 7.5 | 19.3 | HIGH | — | 2026-08-20 |
| CVE-2026-72522 | 6.2 | 7.9 | MEDIUM | — | 2026-08-10 |
| CVE-2026-50219 | 5.9 | 7.0 | MEDIUM | — | 2026-06-04 |
| CVE-2026-56412 | 5.9 | 6.7 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56131 | 4.9 | 6.4 | MEDIUM | — | 2026-06-19 |
| CVE-2026-56406 | 6.9 | 6.2 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56407 | 6.9 | 6.2 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56403 | 6.9 | 5.5 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56404 | 6.9 | 2.2 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56410 | 6.9 | 2.1 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56411 | 6.9 | 2.1 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56405 | 6.9 | 1.9 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56408 | 6.9 | 1.9 | MEDIUM | — | 2026-06-21 |
Recent CVEs
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2026-76957 | 7.8 | 1.0 | HIGH | — | 2026-08-20 |
| CVE-2026-76956 | 7.5 | 19.3 | HIGH | — | 2026-08-20 |
| CVE-2026-66046 | 8.7 | 53.1 | HIGH | — | 2026-08-18 |
| CVE-2026-72522 | 6.2 | 7.9 | MEDIUM | — | 2026-08-10 |
| CVE-2026-56412 | 5.9 | 6.7 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56411 | 6.9 | 2.1 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56410 | 6.9 | 2.1 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56409 | 6.5 | 1.6 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56408 | 6.9 | 1.9 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56407 | 6.9 | 6.2 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56406 | 6.9 | 6.2 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56405 | 6.9 | 1.9 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56404 | 6.9 | 2.2 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56403 | 6.9 | 5.5 | MEDIUM | — | 2026-06-21 |
| CVE-2026-56132 | 6.9 | 0.9 | MEDIUM | — | 2026-06-19 |
KEV entries
No entries in the CISA KEV catalog.
Related
Vendor: Libexpat Project — all products and the full vendor record.
Methodology
A product is a (vendor, product) pair as named in the affected-product data. Rate statistics are arithmetic over published figures. Counts key to first-seen day. Raw counts are not comparable across products; this is a reference page assembled from the public record, not a ranking by our judgment.
Sources. CVE Program (cvelistV5), NVD (NIST), CISA KEV, FIRST EPSS.
