{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-5986 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2025-5986 is a medium-severity vulnerability in Mozilla Thunderbird, published on 11 Jun 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2025-5986 and fix it if it is affected.\n\nWhat it is: CVE-2025-5986 is a medium-severity vulnerability in Mozilla Thunderbird, published on 11 Jun 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2025-5986 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-2025-5986/ (Markdown: https://insights.sbomify.com/CVE-2025-5986/index.md)","id":"CVE-2025-5986","markdown":"https://insights.sbomify.com/CVE-2025-5986/index.md","name":"CVE-2025-5986","record":{"aliases":["ALSA-2025:10195","ALSA-2025:10196","DEBIAN-CVE-2025-5986","GHSA-q7fj-77gc-45xq","SUSE-SU-2025:02158-1","UBUNTU-CVE-2025-5986","openSUSE-SU-2025:15204-1"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["data_read","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Thunderbird email client","requires_auth":"none","summary":"Attackers can force unsolicited file downloads causing disk exhaustion or leak Windows credentials via SMB links when viewing crafted HTML emails.","user_interaction":"required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mozilla","cpe":[{"product":"thunderbird","vendor":"mozilla"}],"cvss":{"score":6.5,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-451","name":"User Interface (UI) Misrepresentation of Critical Information"}],"description":"A crafted HTML email using mailbox:/// links can trigger automatic, unsolicited downloads of .pdf files to the user's desktop or home directory without prompting, even if auto-saving is disabled. This behavior can be abused to fill the disk with garbage data (e.g. using /dev/urandom on Linux) or to leak Windows credentials via SMB links when the email is viewed in HTML mode. While user interaction is required to download the .pdf file, visual obfuscation can conceal the download trigger. Viewing the email in HTML mode is enough to load external content. This vulnerability was fixed in Thunderbird 128.11.1 and Thunderbird 139.0.2.","ecosystems":["AlmaLinux:10","AlmaLinux:9","SUSE:Linux Enterprise Module for Package Hub 15 SP6","SUSE:Linux Enterprise Module for Package Hub 15 SP7","SUSE:Linux Enterprise Workstation Extension 15 SP6","SUSE:Linux Enterprise Workstation Extension 15 SP7","openSUSE:Leap 15.6","openSUSE:Tumbleweed"],"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":"Unsolicited File Download, Disk Space Exhaustion, and Credential Leakage via mailbox:/// Links","id":"CVE-2025-5986","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"mozilla:thunderbird","products":["mozilla:thunderbird"],"type":"other","year":"2025"},"n_packages":8,"n_references":3,"next":{"headline":"Libssh: invalid return code for chacha20 poly1305 with openssl backend","id":"CVE-2025-5987"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["128.12.0-1.el10_0.alma.1"],"introduced":["0"],"last_affected":[],"package":"thunderbird","purl":"pkg:rpm/almalinux/thunderbird","source":"ALSA-2025:10195"},{"ecosystem":"AlmaLinux:9","fixed":["128.12.0-1.el9_6.alma.1"],"introduced":["0"],"last_affected":[],"package":"thunderbird","purl":"pkg:rpm/almalinux/thunderbird","source":"ALSA-2025:10196"},{"ecosystem":"SUSE:Linux Enterprise Module for Package Hub 15 SP6","fixed":["128.11.1-150200.8.224.1"],"introduced":["0"],"last_affected":[],"package":"MozillaThunderbird","purl":"pkg:rpm/suse/MozillaThunderbird\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP6","source":"SUSE-SU-2025:02158-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Package Hub 15 SP7","fixed":["128.11.1-150200.8.224.1"],"introduced":["0"],"last_affected":[],"package":"MozillaThunderbird","purl":"pkg:rpm/suse/MozillaThunderbird\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7","source":"SUSE-SU-2025:02158-1"},{"ecosystem":"SUSE:Linux Enterprise Workstation Extension 15 SP6","fixed":["128.11.1-150200.8.224.1"],"introduced":["0"],"last_affected":[],"package":"MozillaThunderbird","purl":"pkg:rpm/suse/MozillaThunderbird\u0026distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP6","source":"SUSE-SU-2025:02158-1"},{"ecosystem":"SUSE:Linux Enterprise Workstation Extension 15 SP7","fixed":["128.11.1-150200.8.224.1"],"introduced":["0"],"last_affected":[],"package":"MozillaThunderbird","purl":"pkg:rpm/suse/MozillaThunderbird\u0026distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7","source":"SUSE-SU-2025:02158-1"},{"ecosystem":"openSUSE:Leap 15.6","fixed":["128.11.1-150200.8.224.1"],"introduced":["0"],"last_affected":[],"package":"MozillaThunderbird","purl":"pkg:rpm/opensuse/MozillaThunderbird\u0026distro=openSUSE%20Leap%2015.6","source":"SUSE-SU-2025:02158-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["128.11.1-2.1"],"introduced":["0"],"last_affected":[],"package":"MozillaThunderbird","purl":"pkg:rpm/opensuse/MozillaThunderbird\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2025:15204-1"}],"prev":{"headline":"code-projects School Fees Payment System improper authentication","id":"CVE-2025-5985"},"products":["Thunderbird"],"published":"2025-06-11","related":[{"cvss_score":9.8,"headline":"Ambiguous parsing of mail headers","id":"CVE-2026-92238","kev_date_added":null,"published":"2026-09-15"},{"cvss_score":9.8,"headline":"Calendar invitation attachments could launch local executables","id":"CVE-2026-84637","kev_date_added":null,"published":"2026-09-01"},{"cvss_score":9.8,"headline":"Memory corruption in Thunderbird","id":"CVE-2021-43529","kev_date_added":null,"published":"2023-02-16"},{"cvss_score":9.8,"headline":"Memory corruption in Thunderbird","id":"CVE-2019-11703","kev_date_added":null,"published":"2019-07-23"},{"cvss_score":9.8,"headline":"Memory corruption in Thunderbird","id":"CVE-2019-11704","kev_date_added":null,"published":"2019-07-23"},{"cvss_score":9.8,"headline":"Memory corruption in Thunderbird","id":"CVE-2019-11705","kev_date_added":null,"published":"2019-07-23"},{"cvss_score":9.8,"headline":"Use after free in Thunderbird","id":"CVE-2018-18512","kev_date_added":null,"published":"2019-04-26"}],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"2026-04-13","vendors":["Mozilla"]},"summary":"Attackers can force unsolicited file downloads causing disk exhaustion or leak Windows credentials via SMB links when viewing crafted HTML emails.","url":"https://insights.sbomify.com/CVE-2025-5986/"}