{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-110247 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-110247 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-110247 is a high-severity vulnerability in Mozilla Thunderbird, published on 13 Oct 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-2026-110247 and fix it if it is affected.\n\nWhat it is: CVE-2026-110247 is a high-severity vulnerability in Mozilla Thunderbird, published on 13 Oct 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-2026-110247 in the wild and no public exploit code.\n\nAffected product: Mozilla Thunderbird. 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-2026-110247/ (Markdown: https://insights.sbomify.com/CVE-2026-110247/index.md)","id":"CVE-2026-110247","markdown":"https://insights.sbomify.com/CVE-2026-110247/index.md","name":"CVE-2026-110247","record":{"aliases":["DEBIAN-CVE-2026-110247","GHSA-6c5g-4xv7-7fmm","UBUNTU-CVE-2026-110247"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Thunderbird email client","requires_auth":"none","summary":"An integer overflow in libmime buffer growth allows heap corruption and potential code execution via crafted messages in Thunderbird.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mozilla","cpe":[],"cvss":{"score":8.4,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"Several buffer-growth sites in libmime performed size arithmetic in 32-bit types without overflow checks. On a sufficiently large message the growth guard could fail open, or the buffer could be reallocated smaller than required, and a subsequent memcpy would then write attacker-controlled data across adjacent heap allocations. This vulnerability was fixed in Thunderbird 158 and Thunderbird 153.6.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Integer overflow in libmime buffer growth could lead to heap corruption","id":"CVE-2026-110247","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Insertion of sensitive information into log files in Amazon SageMaker Python SDK git_utils[.]py","id":"CVE-2026-110248"},"packages":[],"prev":{"headline":"Langflow OSS is affected by multiple vulnerabilities","id":"CVE-2026-110245"},"products":["Thunderbird"],"published":"2026-10-13","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":"total"},"state":"PUBLISHED","updated":"2026-10-27","vendors":["Mozilla"]},"summary":"An integer overflow in libmime buffer growth allows heap corruption and potential code execution via crafted messages in Thunderbird.","url":"https://insights.sbomify.com/CVE-2026-110247/"}