Vendor
Http4k vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 8 vulnerabilities in Http4k: 0 in the last 7 days and 3 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-54148, was published on 18 September 2026. 1 technology has a page of its own.
- Last 7 days
- 0
- Last 90 days
- 3
- Critical, all time
- 1
- Exploited in the wild
- 0
About Http4k
http4k is an HTTP toolkit written in Kotlin for serving and consuming HTTP services.
Http4k technologies
Latest Http4k vulnerabilities
- CVE-2026-54148: http4k is a functional toolkit for Kotlin HTTP applications. Prior to 4.51.0.0, 5.42.0.0, and 6.50.0.0…highCVSS 8.1EPSS 0.6%
- CVE-2026-54147: http4k is a functional toolkit for Kotlin HTTP applications. Prior to 4.51.0.0, 5.42.0.0, and 6.50.0.0…mediumCVSS 6.5EPSS 0.3%
- CVE-2026-53659: http4k is a functional toolkit for Kotlin HTTP applications. Prior to 4.51.0.0, 5.42.0.0, and 6.49.0.0…highCVSS 7.5EPSS 0.6%
- http4k disabled replay protection in Digest authentication default configurationmediumCVSS 5.3
- http4k information exposure via improper cookie scoping in BasicCookieStoragemediumCVSS 6.9
- http4k misleading HmacSha256.hash naming leads to unkeyed digest usagehighCVSS 8.2
- http4k auth bypass via loose Host matching in reverseProxymediumCVSS 6.3
- CVE-2024-55875: http4k XXE and DoS in XML parsingcriticalCVSS 9.8EPSS 7.2%
Most severe Http4k vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2024-55875: http4k XXE and DoS in XML parsingcriticalCVSS 9.8EPSS 7.2%
- http4k misleading HmacSha256.hash naming leads to unkeyed digest usagehighCVSS 8.2
- CVE-2026-54148: http4k is a functional toolkit for Kotlin HTTP applications. Prior to 4.51.0.0, 5.42.0.0, and 6.50.0.0…highCVSS 8.1EPSS 0.6%
- CVE-2026-53659: http4k is a functional toolkit for Kotlin HTTP applications. Prior to 4.51.0.0, 5.42.0.0, and 6.49.0.0…highCVSS 7.5EPSS 0.6%
- http4k information exposure via improper cookie scoping in BasicCookieStoragemediumCVSS 6.9
- CVE-2026-54147: http4k is a functional toolkit for Kotlin HTTP applications. Prior to 4.51.0.0, 5.42.0.0, and 6.50.0.0…mediumCVSS 6.5EPSS 0.3%
- http4k auth bypass via loose Host matching in reverseProxymediumCVSS 6.3
- http4k disabled replay protection in Digest authentication default configurationmediumCVSS 5.3
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 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 3 | 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/vendors/http4k.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, "Http4k vulnerabilities", https://junglewise.ai/threats/vendors/http4k, 26 September 2026.