{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-117503 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-117503 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-117503 is a medium-severity vulnerability in a2aproject a2a-go, published on 27 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-117503 and fix it if it is affected.\n\nWhat it is: CVE-2026-117503 is a medium-severity vulnerability in a2aproject a2a-go, published on 27 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-117503 in the wild and no public exploit code.\n\nAffected product: a2aproject a2a-go. 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-2026-117503/ (Markdown: https://insights.sbomify.com/CVE-2026-117503/index.md)","id":"CVE-2026-117503","markdown":"https://insights.sbomify.com/CVE-2026-117503/index.md","name":"CVE-2026-117503","record":{"aliases":["GHSA-cpqw-hg34-p3wx"],"analysis":null,"analysis_generated_by":null,"assigner":"VulDB","cpe":[],"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:N/E:X","version":"4.0"},"cwes":[{"id":"CWE-404","name":"Improper Resource Shutdown or Release"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"A vulnerability was determined in a2aproject a2a-go up to 2.4.0. Impacted is an unknown function of the file a2asrv/rest.go of the component REST SSE handler. This manipulation causes resource consumption. It is possible to initiate the attack remotely. Upgrading to version 2.5.0 is recommended to address this issue. Patch name: ff6035bd21e44bb3ee1bfa547885b8c08327fa01. It is recommended to upgrade the affected component.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"a2aproject a2a-go REST SSE handler rest.go resource consumption","id":"CVE-2026-117503","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"a2aproject a2a-go Distributed Manager distributed_manager.go Cancel denial of service","id":"CVE-2026-117504"},"packages":[],"prev":{"headline":"HTTP::Body versions before 1.24_01 for Perl allow memory exhaustion via unbounded buffering of chunked request bodies","id":"CVE-2026-117501"},"products":["a2a-go"],"published":"2026-10-27","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-10-27","vendors":["a2aproject"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-117503/"}