{"answers":{"affected":"2 open source packages ship an affected version, including json-jwt. It affects 2 products.","exploited":"There is no known exploitation of CVE-2019-18848 in the wild and no public exploit code.","fix":"Upgrade json-jwt to 1.11.0 or later.","what":"CVE-2019-18848 is a high-severity authentication bypass vulnerability in Debian Debian Linux, published on 12 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-18848 and fix it if it is affected.\n\nWhat it is: CVE-2019-18848 is a high-severity authentication bypass vulnerability in Debian Debian Linux, published on 12 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2019-18848 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- json-jwt (RubyGems): affected all versions; fixed in 1.11.0\n- json-jwt (RubyGems): affected all versions; fixed in 1.11.0\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-2019-18848/ (Markdown: https://insights.sbomify.com/CVE-2019-18848/index.md)","id":"CVE-2019-18848","markdown":"https://insights.sbomify.com/CVE-2019-18848/index.md","name":"CVE-2019-18848","record":{"aliases":["DEBIAN-CVE-2019-18848","DLA-2390-1","GHSA-cff7-6h4q-q5pj","UBUNTU-CVE-2019-18848"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Ruby JWT library","requires_auth":"none","summary":"Attackers can bypass authentication in the json-jwt Ruby gem by exploiting a missing element count check during JWE string splitting.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"json-jwt","vendor":"json-jwt_project"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"The json-jwt gem before 1.11.0 for Ruby lacks an element count during the splitting of a JWE string.","ecosystems":["RubyGems"],"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":"JSON-jwt Gem lacked element count during splitting of JWE string","id":"CVE-2019-18848","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"RubyGems","product":"debian:debian_linux","products":["debian:debian_linux"],"type":"auth_bypass","year":"2019"},"n_packages":2,"n_references":3,"next":{"headline":"Memory corruption in n/a","id":"CVE-2019-18849"},"packages":[{"ecosystem":"RubyGems","fixed":["1.11.0"],"introduced":["0"],"last_affected":[],"package":"json-jwt","purl":null,"source":"GHSA-cff7-6h4q-q5pj"},{"ecosystem":"RubyGems","fixed":["1.11.0"],"introduced":["0"],"last_affected":[],"package":"json-jwt","purl":"pkg:gem/json-jwt","source":"GHSA-cff7-6h4q-q5pj"}],"prev":{"headline":"Code injection in n/a","id":"CVE-2019-18847"},"products":["n/a"],"published":"2019-11-12","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["n/a"]},"summary":"Attackers can bypass authentication in the json-jwt Ruby gem by exploiting a missing element count check during JWE string splitting.","url":"https://insights.sbomify.com/CVE-2019-18848/"}