{"answers":{"affected":"2 open source packages ship an affected version, including aws-smithy-http-server.","exploited":"There is no known exploitation of CVE-2026-16756 in the wild and no public exploit code.","fix":"Upgrade aws-smithy-http-server to 0.66.5 or later.","what":"CVE-2026-16756 is a high-severity denial of service vulnerability in aws-smithy-http-server, published on 23 Jul 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-2026-16756 and fix it if it is affected.\n\nWhat it is: CVE-2026-16756 is a high-severity denial of service vulnerability in aws-smithy-http-server, published on 23 Jul 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-2026-16756 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- aws-smithy-http-server (crates.io): affected all versions; fixed in 0.66.5\n- aws-smithy-http-server (crates.io): affected all versions; fixed in 0.66.5\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-2026-16756/ (Markdown: https://insights.sbomify.com/CVE-2026-16756/index.md)","id":"CVE-2026-16756","markdown":"https://insights.sbomify.com/CVE-2026-16756/index.md","name":"CVE-2026-16756","record":{"aliases":["GHSA-jvxp-qmx7-gjpx"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Rust HTTP server library","requires_auth":"none","summary":"Remote attackers can cause denial of service by exhausting server resources via Slowloris attacks due to missing timeouts and connection limits in the default configuration.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"AMZN","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Missing connection and header-read timeouts and the absence of a concurrent-connection cap in the default serve() path of Amazon aws-smithy-http-server might allow remote attackers to cause a denial of service by opening many connections and sending partial requests that are never completed, exhausting server sockets and tasks.\n\nTo mitigate this issue, users should upgrade to aws-smithy-http-server 0.66.5 or later.","ecosystems":["crates.io"],"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":"Smithy-RS: Allocation of resources without limits in the default aws-smithy-http-server serve() path allows unauthenticated Slowloris denial of service","id":"CVE-2026-16756","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Snippet Shortcodes \u003c= 5.2.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes","id":"CVE-2026-16758"},"packages":[{"ecosystem":"crates.io","fixed":["0.66.5"],"introduced":["0"],"last_affected":[],"package":"aws-smithy-http-server","purl":null,"source":"GHSA-jvxp-qmx7-gjpx"},{"ecosystem":"crates.io","fixed":["0.66.5"],"introduced":["0"],"last_affected":[],"package":"aws-smithy-http-server","purl":"pkg:cargo/aws-smithy-http-server","source":"GHSA-jvxp-qmx7-gjpx"}],"prev":{"headline":"Information disclosure in Smart Camera C33","id":"CVE-2026-16755"},"products":["aws-smithy-http-server"],"published":"2026-07-23","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":"2026-08-12","vendors":["AWS"]},"summary":"Remote attackers can cause denial of service by exhausting server resources via Slowloris attacks due to missing timeouts and connection limits in the default configuration.","url":"https://insights.sbomify.com/CVE-2026-16756/"}