{"answers":{"affected":"2 open source packages ship an affected version, including websocket-driver. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-54463 in the wild and no public exploit code.","fix":"Upgrade websocket-driver to 0.8.1 or later.","what":"CVE-2026-54463 is a medium-severity denial of service vulnerability in faye websocket-driver-ruby, published on 17 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-2026-54463 and fix it if it is affected.\n\nWhat it is: CVE-2026-54463 is a medium-severity denial of service vulnerability in faye websocket-driver-ruby, published on 17 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-2026-54463 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- websocket-driver (RubyGems): affected all versions; fixed in 0.8.1\n- websocket-driver (RubyGems): affected all versions; fixed in 0.8.1\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-2026-54463/ (Markdown: https://insights.sbomify.com/CVE-2026-54463/index.md)","id":"CVE-2026-54463","markdown":"https://insights.sbomify.com/CVE-2026-54463/index.md","name":"CVE-2026-54463","record":{"aliases":["DEBIAN-CVE-2026-54463","GHSA-ghhp-3qvg-889p","MINI-cgmf-q496-h9m7","MINI-q4p8-m42h-hjxq","UBUNTU-CVE-2026-54463"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Ruby WebSocket library","requires_auth":"none","summary":"An attacker can cause memory exhaustion and denial of service in applications using the websocket-driver Ruby library by sending malformed protocol length headers.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"websocket-driver","vendor":"faye"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an indefinite sequence of 0x80 or higher bytes that the peer parses into an ever-growing Ruby integer. This can make a WebSocket connection consume an unbounded amount of memory and lead to the host process running out of memory. This issue is fixed in version 0.8.1.","ecosystems":["RubyGems"],"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":"websocket-driver: Memory exhaustion via abuse of protocol length headers","id":"CVE-2026-54463","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"RubyGems","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"websocket-driver: Resource limit bypass via message compression","id":"CVE-2026-54464"},"packages":[{"ecosystem":"RubyGems","fixed":["0.8.1"],"introduced":["0"],"last_affected":[],"package":"websocket-driver","purl":null,"source":"GHSA-ghhp-3qvg-889p"},{"ecosystem":"RubyGems","fixed":["0.8.1"],"introduced":["0"],"last_affected":[],"package":"websocket-driver","purl":"pkg:gem/websocket-driver","source":"GHSA-ghhp-3qvg-889p"}],"prev":{"headline":"knative.dev/pkg admission webhooks allow unbounded request-body memory exhaustion","id":"CVE-2026-54462"},"products":["websocket-driver-ruby"],"published":"2026-07-17","related":[{"cvss_score":9.2,"headline":"websocket-driver: Message corruption via abuse of protocol length headers","id":"CVE-2026-54466","kev_date_added":null,"published":"2026-07-17"},{"cvss_score":6.3,"headline":"websocket-driver: Memory exhaustion in HTTP header parser","id":"CVE-2026-54465","kev_date_added":null,"published":"2026-07-17"}],"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":"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-20","vendors":["faye"]},"summary":"An attacker can cause memory exhaustion and denial of service in applications using the websocket-driver Ruby library by sending malformed protocol length headers.","url":"https://insights.sbomify.com/CVE-2026-54463/"}