{"answers":{"affected":"It affects 3 products.","exploited":"Yes. Attackers have exploited CVE-2019-17026 in the wild since at least 3 Nov 2021.","fix":"Upgrade to a fixed version. US federal agencies must fix it by 3 May 2022.","what":"CVE-2019-17026 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 2 Mar 2020. 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-2019-17026 and fix it if it is affected.\n\nWhat it is: CVE-2019-17026 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 2 Mar 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: Yes. Attackers have exploited CVE-2019-17026 in the wild since at least 3 Nov 2021.\n\nAffected product: Canonical Ubuntu Linux. 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-2019-17026/ (Markdown: https://insights.sbomify.com/CVE-2019-17026/index.md)","id":"CVE-2019-17026","markdown":"https://insights.sbomify.com/CVE-2019-17026/index.md","name":"CVE-2019-17026","record":{"aliases":["DEBIAN-CVE-2019-17026","DLA-2093-1","GHSA-9m3f-27xq-x4j5","UBUNTU-CVE-2019-17026"],"analysis":{"component_type":"browser","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Mozilla Firefox","requires_auth":"none","summary":"Type confusion in the IonMonkey JIT compiler allows attackers to execute arbitrary code via crafted web content.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mozilla","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"firefox","vendor":"mozilla"},{"product":"thunderbird","vendor":"mozilla"}],"cvss":{"score":8.8,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-843","name":"Access of Resource Using Incompatible Type"}],"description":"Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR \u003c 68.4.1, Thunderbird \u003c 68.4.1, and Firefox \u003c 72.0.1.","ecosystems":[],"exploits":{"exploitdb":1,"first_seen":"2020-08-27","github_poc":2,"max_poc_stars":47,"metasploit":0,"nuclei":0,"refs":[{"date":"2020-08-27T19:32:07Z","kind":"github_poc","ref":"https://github.com/maxpl0it/CVE-2019-17026-Exploit","stars":47,"title":"An exploit for CVE-2019-17026. It pops xcalc and was tested on Ubuntu (x64)."},{"date":"2021-02-24T13:18:54Z","kind":"github_poc","ref":"https://github.com/lsw29475/CVE-2019-17026","stars":3,"title":null},{"date":"2021-05-13","kind":"exploitdb","ref":"49864","stars":null,"title":"Firefox 72 IonMonkey - JIT Type Confusion"}],"tier":"exploited"},"has_fix":true,"headline":"Mozilla Firefox And Thunderbird Type Confusion","id":"CVE-2019-17026","indexable":true,"kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","knownRansomwareCampaignUse":"Unknown","product":"Firefox and Thunderbird","requiredAction":"Apply updates per vendor instructions.","vendorProject":"Mozilla","vulnerabilityName":"Mozilla Firefox And Thunderbird Type Confusion Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","mozilla:firefox","mozilla:thunderbird"],"type":"memory_corruption","year":"2019"},"n_packages":0,"n_references":6,"next":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2019-17027"},"packages":[],"prev":{"headline":"Memory corruption in Firefox","id":"CVE-2019-17025"},"products":["Firefox","Firefox ESR","Thunderbird"],"published":"2020-03-02","related":[{"cvss_score":9.8,"headline":"SaltStack Salt Authentication Bypass","id":"CVE-2020-11651","kev_date_added":"2021-11-03","published":"2020-04-30"},{"cvss_score":9.8,"headline":"OpenSMTPD Remote Code Execution","id":"CVE-2020-7247","kev_date_added":"2022-03-25","published":"2020-01-29"},{"cvss_score":9.8,"headline":"Exim Out-of-bounds Write","id":"CVE-2019-16928","kev_date_added":"2022-03-03","published":"2019-09-27"},{"cvss_score":9.8,"headline":"Exim Buffer Overflow","id":"CVE-2018-6789","kev_date_added":"2021-11-03","published":"2018-02-08"},{"cvss_score":9.8,"headline":"Oracle Java SE and Java SE Embedded Remote Code Execution","id":"CVE-2015-2590","kev_date_added":"2022-03-03","published":"2015-07-16"},{"cvss_score":9.8,"headline":"Oracle JRE Remote Code Execution","id":"CVE-2013-0422","kev_date_added":"2022-05-25","published":"2013-01-10"},{"cvss_score":9.8,"headline":"Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution","id":"CVE-2011-3544","kev_date_added":"2022-03-03","published":"2011-10-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"GPL-2.0-or-later","name":"Exploit-DB"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-10-21","vendors":["Mozilla"]},"summary":"Type confusion in the IonMonkey JIT compiler allows attackers to execute arbitrary code via crafted web content.","url":"https://insights.sbomify.com/CVE-2019-17026/"}