{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2018-16844 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2018-16844 is a medium-severity denial of service vulnerability in Apple Xcode, published on 7 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-16844 and fix it if it is affected.\n\nWhat it is: CVE-2018-16844 is a medium-severity denial of service vulnerability in Apple Xcode, published on 7 Nov 2018. 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-2018-16844 in the wild and no public exploit code.\n\nAffected product: Apple Xcode. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2018-16844/ (Markdown: https://insights.sbomify.com/CVE-2018-16844/index.md)","id":"CVE-2018-16844","markdown":"https://insights.sbomify.com/CVE-2018-16844/index.md","name":"CVE-2018-16844","record":{"aliases":["ALPINE-CVE-2018-16844","CLEANSTART-2026-TP31533","DEBIAN-CVE-2018-16844","GHSA-4576-cf38-77f2","UBUNTU-CVE-2018-16844"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Web server","requires_auth":"none","summary":"Attackers can cause excessive CPU usage and denial of service in nginx when HTTP/2 is enabled via non-default configuration.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"xcode","vendor":"apple"},{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"nginx","vendor":"f5"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.0"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP/2 that can allow for excessive CPU usage. This issue affects nginx compiled with the ngx_http_v2_module (not compiled by default) if the 'http2' option of the 'listen' directive is used in a configuration file.","ecosystems":[],"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":"Denial of service in nginx","id":"CVE-2018-16844","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"apple:xcode","products":["apple:xcode","canonical:ubuntu_linux","debian:debian_linux"],"type":"denial_of_service","year":"2018"},"n_packages":0,"n_references":11,"next":{"headline":"Denial of service in nginx","id":"CVE-2018-16845"},"packages":[],"prev":{"headline":"Denial of service in nginx","id":"CVE-2018-16843"},"products":["nginx"],"published":"2018-11-07","related":[{"cvss_score":8.1,"headline":"Git Link Following","id":"CVE-2025-48384","kev_date_added":"2025-08-25","published":"2025-07-08"},{"cvss_score":9.8,"headline":"JGit Improper Input Validation vulnerability","id":"CVE-2014-9390","kev_date_added":null,"published":"2020-02-12"},{"cvss_score":9.8,"headline":"Deserialization of untrusted data in FasterXML jackson-databind","id":"CVE-2019-14379","kev_date_added":null,"published":"2019-07-29"},{"cvss_score":9.8,"headline":"An issue was discovered in certain Apple products.","id":"CVE-2018-4164","kev_date_added":null,"published":"2018-04-03"},{"cvss_score":9.8,"headline":"Use after free in n/a","id":"CVE-2016-0746","kev_date_added":null,"published":"2016-02-15"},{"cvss_score":9.3,"headline":"Missing authorization in n/a","id":"CVE-2004-2687","kev_date_added":null,"published":"2007-09-23"},{"cvss_score":8.8,"headline":"This issue was addressed by enforcing library validation on the affected binaries.","id":"CVE-2026-86948","kev_date_added":null,"published":"2026-10-20"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["[UNKNOWN]"]},"summary":"Attackers can cause excessive CPU usage and denial of service in nginx when HTTP/2 is enabled via non-default configuration.","url":"https://insights.sbomify.com/CVE-2018-16844/"}