{"schema_version":1,"title":"Http4s-Ember-Core vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 10 vulnerabilities in Http4s-Ember-Core: 0 in the last 7 days and 10 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-88975, was published on 15 September 2026.","url":"https://junglewise.ai/threats/technologies/http4s-ember-core","json_url":"https://junglewise.ai/threats/technologies/http4s-ember-core.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/http4s-ember-core","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":7,"all_time":10,"critical":1,"exploited":0,"last_7_days":0,"last_30_days":9,"last_90_days":10,"last_365_days":10},"latest":[{"cve":"CVE-2026-88975","cvss":7.5,"epss":0.0063,"slug":"cve-2026-88975-http4s-ember-http-2-frame-buffering-denial-of-service","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.37 and 1.0.0-M48, Ember’s HTTP/2 read loop parses a frame’s 24-bit declared len","severity":"high","exploited":false,"published_at":"2026-09-15T20:19:19.943+00:00","url":"https://junglewise.ai/threats/cve-2026-88975-http4s-ember-http-2-frame-buffering-denial-of-service"},{"cve":"CVE-2026-69218","cvss":7.5,"epss":0.0063,"slug":"cve-2026-69218-http4s-ember-http-2-unbounded-continuation-frame-accumulation","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, When Ember receives an HTTP/2 HEADERS or PUSH_PROMISE frame w","severity":"high","exploited":false,"published_at":"2026-09-15T20:17:41.31+00:00","url":"https://junglewise.ai/threats/cve-2026-69218-http4s-ember-http-2-unbounded-continuation-frame-accumulation"},{"cve":"CVE-2026-69206","cvss":5.9,"epss":0.004,"slug":"cve-2026-69206-http4s-digestauth-replay-attack-in-authorization-header","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, DigestAuth replay protection records lastNc plus one instead","severity":"medium","exploited":false,"published_at":"2026-09-15T20:17:40.18+00:00","url":"https://junglewise.ai/threats/cve-2026-69206-http4s-digestauth-replay-attack-in-authorization-header"},{"cve":"CVE-2026-69205","cvss":8.7,"epss":0.0048,"slug":"cve-2026-69205-http4s-ember-http-request-smuggling-via-transfer-encoding-parsing","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember’s HeaderP.parse uses a case-sensitive substring test fo","severity":"high","exploited":false,"published_at":"2026-09-15T20:17:39.653+00:00","url":"https://junglewise.ai/threats/cve-2026-69205-http4s-ember-http-request-smuggling-via-transfer-encoding-parsing"},{"cve":"CVE-2026-69203","cvss":7.5,"epss":0.0063,"slug":"cve-2026-69203-http4s-ember-http-2-stream-limit-enforcement-bypass","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, An Ember server with HTTP/2 enabled through withHttp2 does no","severity":"high","exploited":false,"published_at":"2026-09-15T20:17:39.12+00:00","url":"https://junglewise.ai/threats/cve-2026-69203-http4s-ember-http-2-stream-limit-enforcement-bypass"},{"cve":"CVE-2026-69202","cvss":7.5,"epss":0.0063,"slug":"cve-2026-69202-http4s-ember-http-2-unbounded-inbound-body-buffering","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember’s HTTP/2 flow-control window is replenished according t","severity":"high","exploited":false,"published_at":"2026-09-15T20:17:38.55+00:00","url":"https://junglewise.ai/threats/cve-2026-69202-http4s-ember-http-2-unbounded-inbound-body-buffering"},{"cve":"CVE-2026-69216","cvss":5.4,"epss":0.0037,"slug":"cve-2026-69216-http4s-ember-chunk-parser-lenience-in-http-request-smuggling","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember’s chunk decoder trims the chunk-size token and accepts","severity":"medium","exploited":false,"published_at":"2026-09-15T19:17:38.603+00:00","url":"https://junglewise.ai/threats/cve-2026-69216-http4s-ember-chunk-parser-lenience-in-http-request-smuggling"},{"cve":"CVE-2026-69213","cvss":7.5,"epss":0.0063,"slug":"cve-2026-69213-http4s-ember-http-2-unbounded-outbound-frame-queue-denial-of","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember HTTP/2 serializes outbound frames through one unbounded","severity":"high","exploited":false,"published_at":"2026-09-15T19:17:38.317+00:00","url":"https://junglewise.ai/threats/cve-2026-69213-http4s-ember-http-2-unbounded-outbound-frame-queue-denial-of"},{"cve":"CVE-2026-69204","cvss":4,"epss":0.0057,"slug":"cve-2026-69204-http4s-ember-http-request-smuggling-via-transfer-encoding-and","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember HTTP/1.1 does not reject messages containing both Trans","severity":"critical","exploited":false,"published_at":"2026-09-15T19:17:37.58+00:00","url":"https://junglewise.ai/threats/cve-2026-69204-http4s-ember-http-request-smuggling-via-transfer-encoding-and"},{"cve":"CVE-2026-54556","cvss":4,"epss":0.0052,"slug":"cve-2026-54556-http4s-http-2-denial-of-service-in-hpack-header-compression","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, an unauthenticated HTTP/2 peer can cause an out-of-memory den","severity":"high","exploited":false,"published_at":"2026-08-26T15:16:49.527+00:00","url":"https://junglewise.ai/threats/cve-2026-54556-http4s-http-2-denial-of-service-in-hpack-header-compression"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":1,"exploited":0,"vulnerabilities":9},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Http4s","slug":"http4s","vulnerabilities":6,"url":"https://junglewise.ai/threats/technologies/http4s"},{"name":"Http4s Blaze-Server","slug":"blaze-server","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/blaze-server"}],"technology":{"hub":true,"name":"Http4s-Ember-Core","slug":"http4s-ember-core","vendor":{"name":"Http4s","slug":"http4s","url":"https://junglewise.ai/threats/vendors/http4s"},"aliases":[],"category":"library","description":"Core Ember HTTP backend implementation for the http4s Scala HTTP client/server library.","url":"https://junglewise.ai/threats/technologies/http4s-ember-core"},"most_severe":[{"cve":"CVE-2026-69204","cvss":4,"epss":0.0057,"slug":"cve-2026-69204-http4s-ember-http-request-smuggling-via-transfer-encoding-and","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember HTTP/1.1 does not reject messages containing both Trans","severity":"critical","exploited":false,"published_at":"2026-09-15T19:17:37.58+00:00","url":"https://junglewise.ai/threats/cve-2026-69204-http4s-ember-http-request-smuggling-via-transfer-encoding-and"},{"cve":"CVE-2026-69205","cvss":8.7,"epss":0.0048,"slug":"cve-2026-69205-http4s-ember-http-request-smuggling-via-transfer-encoding-parsing","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember’s HeaderP.parse uses a case-sensitive substring test fo","severity":"high","exploited":false,"published_at":"2026-09-15T20:17:39.653+00:00","url":"https://junglewise.ai/threats/cve-2026-69205-http4s-ember-http-request-smuggling-via-transfer-encoding-parsing"},{"cve":"CVE-2026-88975","cvss":7.5,"epss":0.0063,"slug":"cve-2026-88975-http4s-ember-http-2-frame-buffering-denial-of-service","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.37 and 1.0.0-M48, Ember’s HTTP/2 read loop parses a frame’s 24-bit declared len","severity":"high","exploited":false,"published_at":"2026-09-15T20:19:19.943+00:00","url":"https://junglewise.ai/threats/cve-2026-88975-http4s-ember-http-2-frame-buffering-denial-of-service"},{"cve":"CVE-2026-69218","cvss":7.5,"epss":0.0063,"slug":"cve-2026-69218-http4s-ember-http-2-unbounded-continuation-frame-accumulation","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, When Ember receives an HTTP/2 HEADERS or PUSH_PROMISE frame w","severity":"high","exploited":false,"published_at":"2026-09-15T20:17:41.31+00:00","url":"https://junglewise.ai/threats/cve-2026-69218-http4s-ember-http-2-unbounded-continuation-frame-accumulation"},{"cve":"CVE-2026-69203","cvss":7.5,"epss":0.0063,"slug":"cve-2026-69203-http4s-ember-http-2-stream-limit-enforcement-bypass","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, An Ember server with HTTP/2 enabled through withHttp2 does no","severity":"high","exploited":false,"published_at":"2026-09-15T20:17:39.12+00:00","url":"https://junglewise.ai/threats/cve-2026-69203-http4s-ember-http-2-stream-limit-enforcement-bypass"},{"cve":"CVE-2026-69202","cvss":7.5,"epss":0.0063,"slug":"cve-2026-69202-http4s-ember-http-2-unbounded-inbound-body-buffering","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember’s HTTP/2 flow-control window is replenished according t","severity":"high","exploited":false,"published_at":"2026-09-15T20:17:38.55+00:00","url":"https://junglewise.ai/threats/cve-2026-69202-http4s-ember-http-2-unbounded-inbound-body-buffering"},{"cve":"CVE-2026-69213","cvss":7.5,"epss":0.0063,"slug":"cve-2026-69213-http4s-ember-http-2-unbounded-outbound-frame-queue-denial-of","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember HTTP/2 serializes outbound frames through one unbounded","severity":"high","exploited":false,"published_at":"2026-09-15T19:17:38.317+00:00","url":"https://junglewise.ai/threats/cve-2026-69213-http4s-ember-http-2-unbounded-outbound-frame-queue-denial-of"},{"cve":"CVE-2026-54556","cvss":4,"epss":0.0052,"slug":"cve-2026-54556-http4s-http-2-denial-of-service-in-hpack-header-compression","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, an unauthenticated HTTP/2 peer can cause an out-of-memory den","severity":"high","exploited":false,"published_at":"2026-08-26T15:16:49.527+00:00","url":"https://junglewise.ai/threats/cve-2026-54556-http4s-http-2-denial-of-service-in-hpack-header-compression"},{"cve":"CVE-2026-69206","cvss":5.9,"epss":0.004,"slug":"cve-2026-69206-http4s-digestauth-replay-attack-in-authorization-header","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, DigestAuth replay protection records lastNc plus one instead","severity":"medium","exploited":false,"published_at":"2026-09-15T20:17:40.18+00:00","url":"https://junglewise.ai/threats/cve-2026-69206-http4s-digestauth-replay-attack-in-authorization-header"},{"cve":"CVE-2026-69216","cvss":5.4,"epss":0.0037,"slug":"cve-2026-69216-http4s-ember-chunk-parser-lenience-in-http-request-smuggling","title":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember’s chunk decoder trims the chunk-size token and accepts","severity":"medium","exploited":false,"published_at":"2026-09-15T19:17:38.603+00:00","url":"https://junglewise.ai/threats/cve-2026-69216-http4s-ember-chunk-parser-lenience-in-http-request-smuggling"}],"generated_at":"2026-09-26T15:07:00.181821+00:00"}