{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-118176 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-118176 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-118176 is a vulnerability in Mozilla Thunderbird, published on 27 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-118176 and fix it if it is affected.\n\nWhat it is: CVE-2026-118176 is a vulnerability in Mozilla Thunderbird, published on 27 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-118176 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-2026-118176/ (Markdown: https://insights.sbomify.com/CVE-2026-118176/index.md)","id":"CVE-2026-118176","markdown":"https://insights.sbomify.com/CVE-2026-118176/index.md","name":"CVE-2026-118176","record":{"aliases":["DEBIAN-CVE-2026-118176","GHSA-g4vf-4v95-x4pc","UBUNTU-CVE-2026-118176"],"analysis":null,"analysis_generated_by":null,"assigner":"mozilla","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Thunderbird's check that prevents mailbox: URLs from accessing files on remote Windows network shares could be bypassed using extended-length UNC paths. Displaying a specially crafted email could cause Thunderbird to connect to an SMB server chosen by the attacker, disclosing the user's Windows account name and NTLM authentication data, which could be used for offline password cracking or relay attacks.\nThis bug only affects Thunderbird on Windows. Other operating systems are unaffected. This vulnerability was fixed in Thunderbird 159 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":"Bypass of remote UNC path restriction in mailbox: URLs","id":"CVE-2026-118176","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Calendar discovery accepted local file and remote network share locations","id":"CVE-2026-118177"},"packages":[],"prev":{"headline":"Content of other messages could be included when replying to a crafted message","id":"CVE-2026-118175"},"products":["Thunderbird"],"published":"2026-10-27","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-27","vendors":["Mozilla"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-118176/"}