{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-18727 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-18727 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 12 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-18727 and fix it if it is affected.\n\nWhat it is: CVE-2026-18727 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 12 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-18727 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-2026-18727/ (Markdown: https://insights.sbomify.com/CVE-2026-18727/index.md)","id":"CVE-2026-18727","markdown":"https://insights.sbomify.com/CVE-2026-18727/index.md","name":"CVE-2026-18727","record":{"aliases":["AZL-95922","DEBIAN-CVE-2026-18727","GHSA-g663-r6hr-qmc2","UBUNTU-CVE-2026-18727"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux iSCSI client","requires_auth":"none","summary":"An unauthenticated attacker can cause a denial of service in open-iscsi by sending crafted DHCPv6 traffic that triggers an integer underflow and crash.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"enterprise_linux","vendor":"redhat"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-191","name":"Integer Underflow (Wrap or Wraparound)"}],"description":"A flaw was found in open-iscsi's iscsiuio component. This vulnerability involves an integer underflow and out-of-bounds read during Dynamic Host Configuration Protocol for IPv6 (DHCPv6) packet parsing. Specifically, crafted DHCPv6 Advertise traffic with a short User Datagram Protocol (UDP) length can cause the DHCPv6 payload length to underflow. An unauthenticated attacker on an adjacent network segment can exploit this by sending specially crafted IPv6 UDP traffic while the client is in an active DHCPv6 exchange, leading to a denial of service due to a process crash or service disruption.","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":"Open-iscsi: open-iscsi: integer underflow in iscsiuio dhcpv6 parsing","id":"CVE-2026-18727","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"redhat:enterprise_linux","products":["redhat:enterprise_linux"],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Open-iscsi: open-iscsi: integer underflow in iscsiuio ipv4 dhcp parsing","id":"CVE-2026-18728"},"packages":[],"prev":{"headline":"Open-iscsi: open-iscsi: denial of service in iscsiuio router advertisement parsing","id":"CVE-2026-18726"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 9"],"published":"2026-08-12","related":[{"cvss_score":9.8,"headline":"Red Hat JBoss RichFaces Framework Expression Language Injection","id":"CVE-2018-14667","kev_date_added":"2023-09-28","published":"2018-11-06"},{"cvss_score":9.8,"headline":"Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a securit","id":"CVE-2021-20325","kev_date_added":null,"published":"2022-02-18"},{"cvss_score":9.8,"headline":"Memory corruption in libwebp","id":"CVE-2018-25011","kev_date_added":null,"published":"2021-05-21"},{"cvss_score":9.8,"headline":"Other in libwebp","id":"CVE-2018-25014","kev_date_added":null,"published":"2021-05-21"},{"cvss_score":9.8,"headline":"Supply chain in redhat-upgrade-tool","id":"CVE-2014-3585","kev_date_added":null,"published":"2019-11-22"},{"cvss_score":9.3,"headline":"Squid: request/response smuggling in http/1.1 and icap","id":"CVE-2023-46846","kev_date_added":null,"published":"2023-11-03"},{"cvss_score":9.1,"headline":"Memory corruption in libwebp","id":"CVE-2018-25009","kev_date_added":null,"published":"2021-05-21"}],"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":"2026-08-18","vendors":["Red Hat"]},"summary":"An unauthenticated attacker can cause a denial of service in open-iscsi by sending crafted DHCPv6 traffic that triggers an integer underflow and crash.","url":"https://insights.sbomify.com/CVE-2026-18727/"}