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.
Mattermost
Vendor reference — Mattermost · sector: Other. Cumulative disclosure record across the archive.
Career totals
| All-time | YTD | |
|---|---|---|
| CVEs | 84 | 84 |
| KEV entries | 0 | 0 |
| KEV/100 | Med CVSS | Med EPSS | C | H | M | L |
|---|---|---|---|---|---|---|
| 0.0 | 5.4 | .0030 | 1 | 9 | 66 | 8 |
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 |
|---|---|
| 2026-05 | 13 |
| 2026-06 | 20 |
| 2026-07 | 15 |
| 2026-08 | 14 |
| 2026-09 | 22 |
| 2026-10 | 0 |
Notable CVEs
Ranked by the published formula: KEV → EPSS → CVSS → CVE ID.
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2026-5740 | 7.5 | 45.4 | HIGH | — | 2026-05-22 |
| CVE-2026-6739 | 7.2 | 37.8 | HIGH | — | 2026-06-12 |
| CVE-2026-6957 | 4.9 | 37.8 | MEDIUM | — | 2026-05-27 |
| CVE-2026-9699 | 6.8 | 37.6 | MEDIUM | — | 2026-06-26 |
| CVE-2026-6961 | 7.6 | 37.0 | HIGH | — | 2026-06-12 |
| CVE-2026-5308 | 7.5 | 36.4 | HIGH | — | 2026-05-22 |
| CVE-2026-7521 | 5.5 | 35.9 | MEDIUM | — | 2026-07-28 |
| CVE-2026-7184 | 6.5 | 35.9 | MEDIUM | — | 2026-06-12 |
| CVE-2026-4646 | 4.3 | 35.2 | MEDIUM | — | 2026-05-22 |
| CVE-2026-5755 | 6.5 | 34.1 | MEDIUM | — | 2026-05-22 |
| CVE-2026-6850 | 6.5 | 34.1 | MEDIUM | — | 2026-07-13 |
| CVE-2026-8075 | 6.5 | 34.1 | MEDIUM | — | 2026-07-17 |
| CVE-2026-9602 | 6.5 | 34.1 | MEDIUM | — | 2026-07-17 |
| CVE-2026-10080 | 6.5 | 34.1 | MEDIUM | — | 2026-08-17 |
| CVE-2026-10819 | 6.5 | 34.1 | MEDIUM | — | 2026-07-27 |
Recent CVEs
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2026-96259 | 5.5 | 15.5 | MEDIUM | — | 2026-09-22 |
| CVE-2026-96260 | 6.5 | 33.1 | MEDIUM | — | 2026-09-22 |
| CVE-2026-95666 | 4.3 | 27.4 | MEDIUM | — | 2026-09-22 |
| CVE-2026-75588 | 2.6 | 11.2 | LOW | — | 2026-09-17 |
| CVE-2026-12284 | 3.7 | 2.3 | LOW | — | 2026-09-17 |
| CVE-2026-75025 | 4.7 | 4.1 | MEDIUM | — | 2026-09-16 |
| CVE-2026-91181 | 6.5 | 30.4 | MEDIUM | — | 2026-09-14 |
| CVE-2026-12985 | 6.8 | 18.6 | MEDIUM | — | 2026-09-14 |
| CVE-2026-9812 | 6.5 | 28.4 | MEDIUM | — | 2026-09-14 |
| CVE-2026-8821 | 7.1 | 19.6 | HIGH | — | 2026-09-14 |
| CVE-2026-5132 | 6.5 | 33.1 | MEDIUM | — | 2026-09-14 |
| CVE-2026-15814 | 6.5 | 13.1 | MEDIUM | — | 2026-09-14 |
| CVE-2026-14344 | 4.3 | 3.7 | MEDIUM | — | 2026-09-14 |
| CVE-2026-13417 | 4.3 | 10.4 | MEDIUM | — | 2026-09-14 |
| CVE-2026-12882 | 4.3 | 10.4 | MEDIUM | — | 2026-09-14 |
Products
This vendor's products with a reference page (≥2 disclosures), by CVE count. A monolithic vendor total dilutes signal; product pages sharpen it.
| Product | CVEs | KEV |
|---|---|---|
| Mattermost | 82 | 0 |
KEV entries
No entries in the CISA KEV catalog.
KEV timing
| CVE | Days |
|---|---|
| — | |
| CVE | Due | Days over |
|---|---|---|
| — | ||
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.
