Technology · Apple
Apple SwiftNIO vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 4 vulnerabilities in Apple SwiftNIO: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-43678, was published on 20 August 2026.
- Last 7 days
- 0
- Last 90 days
- 1
- Critical, all time
- 0
- Exploited in the wild
- 0
About Apple SwiftNIO
SwiftNIO is a cross-platform asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.
Latest Apple SwiftNIO vulnerabilities
- CVE-2026-43678: Apple swift-nio WebSocket denial of service via oversize payload lengthmediumCVSS 5.3EPSS 0.4%
- CVE-2026-28980: Apple SwiftNIO uncontrolled resource consumption in HTTPDecoderhighCVSS 8.7
- CVE-2026-43671: Apple SwiftNIO out-of-bounds write in ByteBufferhighCVSS 8.3
- CVE-2026-28970: Apple SwiftNIO CRLF injection in HTTP validator handlersmediumCVSS 6.3
Most severe Apple SwiftNIO vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-28980: Apple SwiftNIO uncontrolled resource consumption in HTTPDecoderhighCVSS 8.7
- CVE-2026-43671: Apple SwiftNIO out-of-bounds write in ByteBufferhighCVSS 8.3
- CVE-2026-28970: Apple SwiftNIO CRLF injection in HTTP validator handlersmediumCVSS 6.3
- CVE-2026-43678: Apple swift-nio WebSocket denial of service via oversize payload lengthmediumCVSS 5.3EPSS 0.4%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 1 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/swiftnio.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Apple SwiftNIO vulnerabilities", https://junglewise.ai/threats/technologies/swiftnio, 26 September 2026.