{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-109831 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-109831 is a medium-severity vulnerability in GNU Project UnRTF, published on 20 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-109831 and fix it if it is affected.\n\nWhat it is: CVE-2026-109831 is a medium-severity vulnerability in GNU Project UnRTF, published on 20 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-109831 in the wild and no public exploit code.\n\nAffected product: GNU Project UnRTF. 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-2026-109831/ (Markdown: https://insights.sbomify.com/CVE-2026-109831/index.md)","id":"CVE-2026-109831","markdown":"https://insights.sbomify.com/CVE-2026-109831/index.md","name":"CVE-2026-109831","record":{"aliases":["DEBIAN-CVE-2026-109831","GHSA-q9jg-8mw4-m3mw","OESA-2026-4535","OESA-2026-4536","OESA-2026-4537","OESA-2026-4538","UBUNTU-CVE-2026-109831"],"analysis":null,"analysis_generated_by":null,"assigner":"jpcert","cpe":[],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"UnRTF by GNU Project is vulnerable to out-of-bounds write. If a user opens an RTF file crafted by an attacker, it may lead to a denial-of-service (DoS) condition.","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":"UnRTF by GNU Project is vulnerable to out-of-bounds write.","id":"CVE-2026-109831","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Gnome-remote-desktop: busy-wait dos in vnc tls i/o handlers (gnutls_e_again / gnutls_e_interrupted)","id":"CVE-2026-109832"},"packages":[],"prev":{"headline":"undici vulnerable to cache poisoning and cross-user disclosure via cross-origin redirects","id":"CVE-2026-109829"},"products":["UnRTF"],"published":"2026-10-20","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-20","vendors":["GNU Project"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-109831/"}