{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-15561 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-15561 is a high-severity denial of service vulnerability in Red Hat JBoss Enterprise Application Platform 7, published on 11 Aug 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-2026-15561 and fix it if it is affected.\n\nWhat it is: CVE-2026-15561 is a high-severity denial of service vulnerability in Red Hat JBoss Enterprise Application Platform 7, published on 11 Aug 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-2026-15561 in the wild and no public exploit code.\n\nAffected product: Red Hat JBoss Enterprise Application Platform 7. 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-2026-15561/ (Markdown: https://insights.sbomify.com/CVE-2026-15561/index.md)","id":"CVE-2026-15561","markdown":"https://insights.sbomify.com/CVE-2026-15561/index.md","name":"CVE-2026-15561","record":{"aliases":["DEBIAN-CVE-2026-15561","GHSA-fhmg-q5fc-2m8v","UBUNTU-CVE-2026-15561"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"JBoss EAP Undertow","requires_auth":"none","summary":"An unauthenticated attacker can cause a Denial of Service by triggering an OutOfMemory error in the Undertow chunked-transfer decoder due to missing limits.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","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-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"A flaw was found in EAP's undertow http/1.1 chunked-transfer decoder. missing limits on size and count would allow an attacker to use an unauthenticated connection to drive the JVM to an OutOfMemory error, stopping all deployments on the listener, and achieving Denial of Service.","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":"Undertow-core: oom via missing limits in chunked trailer in eap's undertow","id":"CVE-2026-15561","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":10,"next":{"headline":"Jboss-remoting: jboss-remoting: integer overflow in messagereader leads to pre-authentication denial of service","id":"CVE-2026-15562"},"packages":[],"prev":{"headline":"Openjdk-orb: unauthed class loading via iiop in eap","id":"CVE-2026-15560"},"products":["Red Hat JBoss Enterprise Application Platform 7","Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7","Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8","Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9","Red Hat JBoss Enterprise Application Platform 7.4.25","Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10","Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8","Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9","Red Hat JBoss Enterprise Application Platform 8.1.8.GA","Red Hat JBoss Enterprise Application Platform Expansion Pack"],"published":"2026-08-11","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-22","vendors":["Red Hat"]},"summary":"An unauthenticated attacker can cause a Denial of Service by triggering an OutOfMemory error in the Undertow chunked-transfer decoder due to missing limits.","url":"https://insights.sbomify.com/CVE-2026-15561/"}