{"answers":{"affected":"2 open source packages ship an affected version, including Steeltoe.Discovery.Eureka.","exploited":"There is no known exploitation of CVE-2026-81515 in the wild and no public exploit code.","fix":"Upgrade Steeltoe.Discovery.Eureka to 4.3.0 or later.","what":"CVE-2026-81515 is a high-severity denial of service vulnerability in SteeltoeOSS security-advisories, published on 17 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-2026-81515 and fix it if it is affected.\n\nWhat it is: CVE-2026-81515 is a high-severity denial of service vulnerability in SteeltoeOSS security-advisories, published on 17 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-2026-81515 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Steeltoe.Discovery.Eureka (NuGet): affected from 4.0.0; fixed in 4.3.0\n- Steeltoe.Discovery.Eureka (NuGet): affected from 4.0.0; fixed in 4.3.0\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-2026-81515/ (Markdown: https://insights.sbomify.com/CVE-2026-81515/index.md)","id":"CVE-2026-81515","markdown":"https://insights.sbomify.com/CVE-2026-81515/index.md","name":"CVE-2026-81515","record":{"aliases":["GHSA-hr73-3gpv-hh6q"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Steeltoe Eureka client","requires_auth":"none","summary":"A malicious registration can cause Steeltoe Eureka clients to fail parsing, resulting in empty or stale service lists and denial of service.","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-755","name":"Improper Handling of Exceptional Conditions"}],"description":"Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. From 4.0.0 until 4.3.0, EurekaDiscoveryClient deserializes the registry response as one unit, and an unrecognized actionType or status, a non-Boolean isCoordinatingDiscoveryServer, or a nonnumeric timestamp can abort the entire response. A principal that can register or update an instance can cause all connected Steeltoe clients to receive an empty or stale instance list until the malformed registration is removed. The JsonInstanceInfoConverter, BoolStringJsonConverter, and LongStringJsonConverter parsing paths are affected. This issue is distinct from the earlier DataCenterInfo.name parsing vulnerability. This issue is fixed in version 4.3.0.","ecosystems":["NuGet"],"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":"Steeltoe.Discovery.Eureka: malformed enum/bool/timestamp field aborts entire registry fetch (DoS)","id":"CVE-2026-81515","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Steeltoe.Discovery.Consul: malformed 'secure' metadata aborts service instance lookup (DoS)","id":"CVE-2026-81516"},"packages":[{"ecosystem":"NuGet","fixed":["4.3.0"],"introduced":["4.0.0"],"last_affected":[],"package":"Steeltoe.Discovery.Eureka","purl":null,"source":"GHSA-hr73-3gpv-hh6q"},{"ecosystem":"NuGet","fixed":["4.3.0"],"introduced":["4.0.0"],"last_affected":[],"package":"Steeltoe.Discovery.Eureka","purl":"pkg:nuget/Steeltoe.Discovery.Eureka","source":"GHSA-hr73-3gpv-hh6q"}],"prev":{"headline":"nforwardauth: Unvalidated r parameter allows post-authentication open redirect","id":"CVE-2026-81509"},"products":["security-advisories"],"published":"2026-09-17","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":"2026-09-21","vendors":["SteeltoeOSS"]},"summary":"A malicious registration can cause Steeltoe Eureka clients to fail parsing, resulting in empty or stale service lists and denial of service.","url":"https://insights.sbomify.com/CVE-2026-81515/"}