https://vulnerability.circl.lu/sightings/feed 2026-09-18T23:23:55.363546+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent sightings. https://vulnerability.circl.lu/sighting/7d21317e-a639-4267-b011-a7a3d12c9e93/export 2026-09-18T23:23:55.383234+00:00 Automation user https://vulnerability.circl.lu/user/automation {"uuid": "7d21317e-a639-4267-b011-a7a3d12c9e93", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-69213", "type": "seen", "source": "https://gist.github.com/alon710/27956b315c2388b848451081f38450c3", "content": "# CVE-2026-69213: CVE-2026-69213: Uncontrolled Resource Consumption (DoS) in http4s Ember HTTP/2 Implementation\n\n> **CVSS Score:** 7.5\n> **Published:** 2026-09-15\n> **Full Report:** https://cvereports.com/reports/CVE-2026-69213\n\n## Summary\nAn uncontrolled resource consumption vulnerability (CVE-2026-69213) in the http4s Ember HTTP/2 server and client implementations allows unauthenticated remote attackers to trigger an OutOfMemoryError (OOM) and cause a Denial of Service (DoS) by exploiting unbounded outbound queues.\n\n## TL;DR\nEmber HTTP/2 in http4s fails to limit outbound response queues, permitting remote attackers to crash the JVM via OutOfMemoryError by flooding control frames while stalling socket reads.\n\n## Technical Details\n\n- **CWE ID**: CWE-400, CWE-770\n- **Attack Vector**: Network\n- **CVSS v3.1**: 7.5 (High)\n- **Impact**: Denial of Service (DoS)\n- **Exploit Status**: No Public Exploit Available\n- **KEV Status**: Not Listed\n\n## Affected Systems\n\n- org.http4s:http4s-ember-core\n- http4s Ember HTTP/2 Server\n- http4s Ember HTTP/2 Client\n- **http4s-ember-core**: < 0.23.35 (Fixed in: `0.23.35`)\n- **http4s-ember-core**: >= 1.0.0-M1, < 1.0.0-M47 (Fixed in: `1.0.0-M47`)\n\n## Mitigation\n\n- Upgrade to http4s v0.23.35, v1.0.0-M47, or newer versions\n- Disable HTTP/2 support in Ember server configuration if not strictly necessary\n- Utilize a reverse proxy or load balancer to handle HTTP/2 connection management and write timeouts\n\n**Remediation Steps:**\n1. Locate configuration files defining the http4s Ember server or client setup.\n2. Update your project build configuration (e.g., build.sbt) to reference version 0.23.35 or 1.0.0-M47 of 'http4s-ember-core' and related modules.\n3. If updating is not possible, disable HTTP/2 by removing calls to 'withHttp2' from the server builder.\n4. Deploy or configure an upstream proxy (like Nginx or AWS ALB) to enforce aggressive read and write timeout policies on HTTP/2 sessions.\n\n## References\n\n- [GitHub Security Advisory GHSA-8f3q-3jmv-7prw](https://github.com/http4s/http4s/security/advisories/GHSA-8f3q-3jmv-7prw)\n- [GitHub Fix Commit](https://github.com/http4s/http4s/commit/13fe24d6440bde2f1eb70121486cf59c278e6bae)\n- [Http4s Release v0.23.35](https://github.com/http4s/http4s/releases/tag/v0.23.35)\n- [Http4s Release v1.0.0-M47](https://github.com/http4s/http4s/releases/tag/v1.0.0-M47)\n- [CVE Record (CVE.org)](https://www.cve.org/CVERecord?id=CVE-2026-69213)\n- [NVD Entry](https://nvd.nist.gov/vuln/detail/CVE-2026-69213)\n\n\n---\n*Generated by [CVEReports](https://cvereports.com/reports/CVE-2026-69213) - Automated Vulnerability Intelligence*", "creation_timestamp": "2026-09-16T13:32:29.057218Z"} 2026-09-16T13:32:29.057218+00:00 https://vulnerability.circl.lu/sighting/eb3661ca-3978-41ba-a26f-86d34d488056/export 2026-09-18T23:23:55.385799+00:00 Automation user https://vulnerability.circl.lu/user/automation {"uuid": "eb3661ca-3978-41ba-a26f-86d34d488056", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-69213", "type": "seen", "source": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mvlg7l7nfi2e", "content": "\ud83d\udfe0 CVE-2026-69213 - High (7.5)\n\nHttp4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember HTTP/2 seria...\n\nhttps://www.thehackerwire.com/vulnerability/CVE-2026-69213/\n\n#infosec #cybersecurity #CVE #vulnerability #security #patchstack", "creation_timestamp": "2026-09-15T20:03:26.842056Z"} 2026-09-15T20:03:26.842056+00:00