{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-17591 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-17591 is a low-severity use after free vulnerability in Red Hat Enterprise Linux 10, published on 16 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-17591 and fix it if it is affected.\n\nWhat it is: CVE-2026-17591 is a low-severity use after free vulnerability in Red Hat Enterprise Linux 10, published on 16 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-17591 in the wild and no public exploit code.\n\nAffected product: Red Hat Enterprise Linux 10. 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-2026-17591/ (Markdown: https://insights.sbomify.com/CVE-2026-17591/index.md)","id":"CVE-2026-17591","markdown":"https://insights.sbomify.com/CVE-2026-17591/index.md","name":"CVE-2026-17591","record":{"aliases":["AZL-109785","AZL-109788","BELL-CVE-2026-17591","DEBIAN-CVE-2026-17591","ECHO-7b1a-3e8b-4a35","GHSA-x7v4-6qhp-jg74","OESA-2026-4415","OESA-2026-4547","OESA-2026-4548","OESA-2026-4549","RHSA-2026:77775","UBUNTU-CVE-2026-17591"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service","data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Libarchive library","requires_auth":"none","summary":"Attackers can trigger a use-after-free in Libarchive to cause denial of service or read uninitialized memory via crafted archive metadata.","user_interaction":"required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":3.6,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"A flaw was found in libarchive. An attacker can cause a Denial of Service (DoS) or potential information disclosure due to a use-after-free vulnerability, which occurs when a program reads memory that has already been released. This issue arises when the archive_entry_copy_mac_metadata() function deallocates an internal buffer before completing a data copy. An attacker who can supply input to an application utilizing this function can trigger the flaw to crash the application or read uninitialized memory data.","ecosystems":["Red Hat:hummingbird:1"],"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":"Libarchive: libarchive: use-after-free via aliased mac metadata copy","id":"CVE-2026-17591","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":6,"n_references":4,"next":{"headline":"** REJECT ** DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2026-17592"},"packages":[{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.8.9-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"bsdcat","purl":"pkg:rpm/redhat/bsdcat","source":"RHSA-2026:77775"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.8.9-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"bsdcpio","purl":"pkg:rpm/redhat/bsdcpio","source":"RHSA-2026:77775"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.8.9-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"bsdtar","purl":"pkg:rpm/redhat/bsdtar","source":"RHSA-2026:77775"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.8.9-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"bsdunzip","purl":"pkg:rpm/redhat/bsdunzip","source":"RHSA-2026:77775"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.8.9-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"libarchive","purl":"pkg:rpm/redhat/libarchive","source":"RHSA-2026:77775"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.8.9-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"libarchive-devel","purl":"pkg:rpm/redhat/libarchive-devel","source":"RHSA-2026:77775"}],"prev":{"headline":"Shopping Cart \u0026 eCommerce Store \u003c= 5.9.2 - Authenticated (Administrator+) SQL Injection via 'product_order' Parameter","id":"CVE-2026-17589"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9","Red Hat Hardened Images"],"published":"2026-10-16","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"2026-10-19","vendors":["Red Hat"]},"summary":"Attackers can trigger a use-after-free in Libarchive to cause denial of service or read uninitialized memory via crafted archive metadata.","url":"https://insights.sbomify.com/CVE-2026-17591/"}