{"answers":{"affected":"10 open source packages ship an affected version, including org.http4s:http4s-ember-server_2.13, org.http4s:http4s-ember-server_2.12 and org.http4s:http4s-ember-server_3.","exploited":"There is no known exploitation of CVE-2026-69208 in the wild and no public exploit code.","fix":"Upgrade org.http4s:http4s-ember-server_2.13 to a fixed version for your release line: 0.23.35 or 1.0.0-M47.","what":"CVE-2026-69208 is a high-severity denial of service vulnerability in http4s, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-69208 and fix it if it is affected.\n\nWhat it is: CVE-2026-69208 is a high-severity denial of service vulnerability in http4s, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-69208 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.http4s:http4s-ember-server_2.13 (Maven): affected all versions; fixed in 0.23.35\n- org.http4s:http4s-ember-server_2.13 (Maven): affected all versions; fixed in 0.23.35\n- org.http4s:http4s-ember-server_2.13 (Maven): affected from 1.0.0-M1; fixed in 1.0.0-M47\n- org.http4s:http4s-ember-server_2.13 (Maven): affected from 1.0.0-M1; fixed in 1.0.0-M47\n- org.http4s:http4s-ember-server_2.12 (Maven): affected all versions; fixed in 0.23.35\n- org.http4s:http4s-ember-server_2.12 (Maven): affected all versions; fixed in 0.23.35\n- org.http4s:http4s-ember-server_3 (Maven): affected all versions; fixed in 0.23.35\n- org.http4s:http4s-ember-server_3 (Maven): affected all versions; fixed in 0.23.35\n- org.http4s:http4s-ember-server_3 (Maven): affected from 1.0.0-M1; fixed in 1.0.0-M47\n- org.http4s:http4s-ember-server_3 (Maven): affected from 1.0.0-M1; fixed in 1.0.0-M47\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-69208/ (Markdown: https://insights.sbomify.com/CVE-2026-69208/index.md)","id":"CVE-2026-69208","markdown":"https://insights.sbomify.com/CVE-2026-69208/index.md","name":"CVE-2026-69208","record":{"aliases":["GHSA-fm4g-76c9-7w69"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Scala HTTP library","requires_auth":"none","summary":"An unauthenticated attacker can cause a denial of service by exhausting heap memory in Http4s applications using DigestAuth middleware.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-401","name":"Missing Release of Memory after Effective Lifetime"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, the DigestAuth server middleware removes fresh nonces and stops eviction at the first stale nonce because its stale-nonce comparison is inverted. On an application that protects at least one route with DigestAuth, an unauthenticated attacker can repeatedly trigger authentication challenges, causing the persistent nonce map to grow until the JVM exhausts heap memory. This issue is fixed in versions 0.23.35 and 1.0.0-M47.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Http4s: DigestAuth nonce map grows unbounded","id":"CVE-2026-69208","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":10,"n_references":4,"next":{"headline":"Http4s: WebSocket decoder accepts unbounded message sizes","id":"CVE-2026-69209"},"packages":[{"ecosystem":"Maven","fixed":["0.23.35"],"introduced":["0"],"last_affected":[],"package":"org.http4s:http4s-ember-server_2.12","purl":null,"source":"GHSA-fm4g-76c9-7w69"},{"ecosystem":"Maven","fixed":["0.23.35"],"introduced":["0"],"last_affected":[],"package":"org.http4s:http4s-ember-server_2.12","purl":"pkg:maven/org.http4s/http4s-ember-server_2.12","source":"GHSA-fm4g-76c9-7w69"},{"ecosystem":"Maven","fixed":["0.23.35"],"introduced":["0"],"last_affected":[],"package":"org.http4s:http4s-ember-server_2.13","purl":null,"source":"GHSA-fm4g-76c9-7w69"},{"ecosystem":"Maven","fixed":["0.23.35"],"introduced":["0"],"last_affected":[],"package":"org.http4s:http4s-ember-server_2.13","purl":"pkg:maven/org.http4s/http4s-ember-server_2.13","source":"GHSA-fm4g-76c9-7w69"},{"ecosystem":"Maven","fixed":["1.0.0-M47"],"introduced":["1.0.0-M1"],"last_affected":[],"package":"org.http4s:http4s-ember-server_2.13","purl":null,"source":"GHSA-fm4g-76c9-7w69"},{"ecosystem":"Maven","fixed":["1.0.0-M47"],"introduced":["1.0.0-M1"],"last_affected":[],"package":"org.http4s:http4s-ember-server_2.13","purl":"pkg:maven/org.http4s/http4s-ember-server_2.13","source":"GHSA-fm4g-76c9-7w69"},{"ecosystem":"Maven","fixed":["0.23.35"],"introduced":["0"],"last_affected":[],"package":"org.http4s:http4s-ember-server_3","purl":null,"source":"GHSA-fm4g-76c9-7w69"},{"ecosystem":"Maven","fixed":["0.23.35"],"introduced":["0"],"last_affected":[],"package":"org.http4s:http4s-ember-server_3","purl":"pkg:maven/org.http4s/http4s-ember-server_3","source":"GHSA-fm4g-76c9-7w69"},{"ecosystem":"Maven","fixed":["1.0.0-M47"],"introduced":["1.0.0-M1"],"last_affected":[],"package":"org.http4s:http4s-ember-server_3","purl":null,"source":"GHSA-fm4g-76c9-7w69"},{"ecosystem":"Maven","fixed":["1.0.0-M47"],"introduced":["1.0.0-M1"],"last_affected":[],"package":"org.http4s:http4s-ember-server_3","purl":"pkg:maven/org.http4s/http4s-ember-server_3","source":"GHSA-fm4g-76c9-7w69"}],"prev":{"headline":"Hono: ReDoS in CORS middleware via Access-Control-Request-Headers","id":"CVE-2026-69207"},"products":["http4s"],"published":"2026-09-15","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-17","vendors":["http4s"]},"summary":"An unauthenticated attacker can cause a denial of service by exhausting heap memory in Http4s applications using DigestAuth middleware.","url":"https://insights.sbomify.com/CVE-2026-69208/"}