{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-67553 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-67553 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-67553 is a medium-severity denial of service vulnerability in Apache Qpid Proton Dotnet, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-67553 and fix it if it is affected.\n\nWhat it is: CVE-2026-67553 is a medium-severity denial of service vulnerability in Apache Qpid Proton Dotnet, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-67553 in the wild and no public exploit code.\n\nAffected product: Apache Qpid Proton Dotnet. 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-2026-67553/ (Markdown: https://insights.sbomify.com/CVE-2026-67553/index.md)","id":"CVE-2026-67553","markdown":"https://insights.sbomify.com/CVE-2026-67553/index.md","name":"CVE-2026-67553","record":{"aliases":["GHSA-rxxp-x2qg-g2f2"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Qpid Proton Dotnet","requires_auth":"low_privilege","summary":"An authenticated attacker can exceed the session flow control window in Apache Qpid Proton Dotnet, causing a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"qpid_proton-dotnet","vendor":"apache"}],"cvss":{"score":6.5,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"An authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service.\n\nThis issue affects Apache Qpid Proton-Dotnet: through 1.0.0.\n\nUsers are recommended to upgrade to version 1.1.0, which fixes the issue.","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":"Apache Qpid Proton Dotnet: Incoming session flow control window can be exceeded","id":"CVE-2026-67553","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Apache Qpid Proton Dotnet: Unbounded disposition range handling can lead to denial of service","id":"CVE-2026-67554"},"packages":[],"prev":{"headline":"Apache Qpid Proton Dotnet: Unbounded type nesting can lead to pre-authentication stackoverflow","id":"CVE-2026-67552"},"products":["Apache Qpid Proton Dotnet"],"published":"2026-08-05","related":[{"cvss_score":7.5,"headline":"Apache Qpid Proton Dotnet: Unbounded symbol value caching can lead to pre-authentication resource exhaustion","id":"CVE-2026-67465","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":7.5,"headline":"Apache Qpid Proton Dotnet: Type size/count handling can lead to excessive allocation pre-authentication","id":"CVE-2026-67551","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":7.5,"headline":"Apache Qpid Proton Dotnet: Unbounded type nesting can lead to pre-authentication stackoverflow","id":"CVE-2026-67552","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":6.5,"headline":"Apache Qpid Proton Dotnet: Unbounded disposition range handling can lead to denial of service","id":"CVE-2026-67554","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":6.5,"headline":"Apache Qpid Proton Dotnet: Unable to govern the maximum number of transfer frames per incoming delivery","id":"CVE-2026-67555","kev_date_added":null,"published":"2026-08-05"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-06","vendors":["Apache Software Foundation"]},"summary":"An authenticated attacker can exceed the session flow control window in Apache Qpid Proton Dotnet, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2026-67553/"}