{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-66274 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-66274 is a high-severity vulnerability in Apache Qpid Proton-J, published on 5 Aug 2026."},"fix_prompt":"Check this codebase for CVE-2026-66274 and fix it if it is affected.\n\nWhat it is: CVE-2026-66274 is a high-severity vulnerability in Apache Qpid Proton-J, published on 5 Aug 2026. \nExploitation: There is no known exploitation of CVE-2026-66274 in the wild and no public exploit code.\n\nAffected product: Apache Qpid Proton-J. 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-2026-66274/ (Markdown: https://insights.sbomify.com/CVE-2026-66274/index.md)","id":"CVE-2026-66274","markdown":"https://insights.sbomify.com/CVE-2026-66274/index.md","name":"CVE-2026-66274","record":{"aliases":["CLEANSTART-2026-YX84195","GHSA-p2gc-fm5w-94jj"],"analysis":null,"analysis_generated_by":null,"assigner":"apache","cpe":[{"product":"qpid_proton-j","vendor":"apache"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","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-674","name":"Uncontrolled Recursion"}],"description":"A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service.\n\nThis issue affects Apache Qpid Proton-J: through 0.34.1.\n\nUsers are recommended to upgrade to version 0.35.0, 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":true,"headline":"Apache Qpid Proton-J: Unbounded type nesting can lead to pre-authentication stackoverflow","id":"CVE-2026-66274","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Apache Qpid Proton-J: Incoming session flow control window can be exceeded","id":"CVE-2026-66275"},"packages":[],"prev":{"headline":"Apache Qpid Proton-J: Type size/count handling can lead to excessive allocation pre-authentication","id":"CVE-2026-66273"},"products":["Apache Qpid Proton-J"],"published":"2026-08-05","related":[{"cvss_score":7.5,"headline":"Apache Qpid Proton-J: Unbounded symbol value caching can lead to pre-authentication resource exhaustion","id":"CVE-2026-66257","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":7.5,"headline":"Apache Qpid Proton-J: Type size/count handling can lead to excessive allocation pre-authentication","id":"CVE-2026-66273","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":7.4,"headline":"Improper Certificate Validation in proton-j","id":"CVE-2018-17187","kev_date_added":null,"published":"2018-11-13"},{"cvss_score":6.5,"headline":"Apache Qpid Proton-J: Incoming session flow control window can be exceeded","id":"CVE-2026-66275","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":6.5,"headline":"Apache Qpid Proton-J: Unbounded disposition range handling can lead to denial of service","id":"CVE-2026-66276","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":6.5,"headline":"Apache Qpid Proton-J: Unable to govern the maximum number of transfer frames per incoming delivery","id":"CVE-2026-66277","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-06","vendors":["Apache Software Foundation"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-66274/"}