{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2026-35091 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-35091 is a high-severity denial of service vulnerability in Redhat Enterprise Linux, published on 1 Apr 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-2026-35091 and fix it if it is affected.\n\nWhat it is: CVE-2026-35091 is a high-severity denial of service vulnerability in Redhat Enterprise Linux, published on 1 Apr 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-2026-35091 in the wild and no public exploit code.\n\nAffected product: Redhat Enterprise Linux. 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-2026-35091/ (Markdown: https://insights.sbomify.com/CVE-2026-35091/index.md)","id":"CVE-2026-35091","markdown":"https://insights.sbomify.com/CVE-2026-35091/index.md","name":"CVE-2026-35091","record":{"aliases":["AZL-81981","DEBIAN-CVE-2026-35091","GHSA-hmg2-5h4j-37m9","UBUNTU-CVE-2026-35091","openSUSE-SU-2026:10488-1"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["denial_of_service","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Corosync cluster software","requires_auth":"none","summary":"Remote attackers can cause denial of service and disclose memory contents in Corosync by sending crafted UDP packets, affecting Linux distributions.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"corosync","vendor":"corosync"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"openshift","vendor":"redhat"}],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-253","name":"Incorrect Check of Function Return Value"}],"description":"A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync membership commit token sanity check by sending a specially crafted User Datagram Protocol (UDP) packet. This can lead to an out-of-bounds read, causing a denial of service (DoS) and potentially disclosing limited memory contents","ecosystems":["openSUSE:Tumbleweed"],"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":"Corosync: corosync: denial of service and information disclosure via crafted udp packet","id":"CVE-2026-35091","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"redhat:enterprise_linux","products":["redhat:enterprise_linux","redhat:openshift"],"type":"denial_of_service","year":"2026"},"n_packages":1,"n_references":17,"next":{"headline":"Corosync: corosync: denial of service via integer overflow in join message validation","id":"CVE-2026-35092"},"packages":[{"ecosystem":"openSUSE:Tumbleweed","fixed":["3.1.10-4.1"],"introduced":["0"],"last_affected":[],"package":"corosync","purl":"pkg:rpm/opensuse/corosync\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:10488-1"}],"prev":{"headline":"Authentication Bypass in Slican telephone exchanges","id":"CVE-2026-35090"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 10.0 Extended Update Support","Red Hat Enterprise Linux 7 Extended Lifecycle Support","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support","Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On","Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support","Red Hat Enterprise Linux 8.6 Telecommunications Update Service","Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions","Red Hat Enterprise Linux 8.8 Telecommunications Update Service","Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions","Red Hat Enterprise Linux 9","Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.4 Extended Update Support","Red Hat Enterprise Linux 9.6 Extended Update Support","Red Hat OpenShift Container Platform 4"],"published":"2026-04-01","related":[{"cvss_score":9,"headline":"Memory corruption in Corosync","id":"CVE-2025-30472","kev_date_added":null,"published":"2025-03-22"},{"cvss_score":7.5,"headline":"Corosync: corosync: denial of service via integer overflow in join message validation","id":"CVE-2026-35092","kev_date_added":null,"published":"2026-04-01"},{"cvss_score":5,"headline":"Denial of service in n/a","id":"CVE-2013-0250","kev_date_added":null,"published":"2014-06-06"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"2026-08-21","vendors":["Red Hat"]},"summary":"Remote attackers can cause denial of service and disclose memory contents in Corosync by sending crafted UDP packets, affecting Linux distributions.","url":"https://insights.sbomify.com/CVE-2026-35091/"}