{"answers":{"affected":"2 open source packages ship an affected version, including showdown. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-1899 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2024-1899 is a medium-severity denial of service vulnerability in Showdownjs Showdown, published on 26 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2024-1899 and fix it if it is affected.\n\nWhat it is: CVE-2024-1899 is a medium-severity denial of service vulnerability in Showdownjs Showdown, published on 26 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-1899 exists.\n\nAffected packages and fixed versions:\n- showdown (npm): affected all versions up to 2.1.0; no fix listed\n- showdown (npm): affected all versions up to 2.1.0; no fix listed\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-2024-1899/ (Markdown: https://insights.sbomify.com/CVE-2024-1899/index.md)","id":"CVE-2024-1899","markdown":"https://insights.sbomify.com/CVE-2024-1899/index.md","name":"CVE-2024-1899","record":{"aliases":["CLEANSTART-2026-JB83386","GHSA-rmmh-p597-ppvv","MINI-4mm5-73cg-pq28","MINI-4v72-65p8-749h","MINI-6hf8-vh24-7g49","MINI-gv2w-473x-j7xw","MINI-m9xc-j4qc-2hjv","ROOT-APP-NPM-CVE-2024-1899"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript Markdown library","requires_auth":"none","summary":"A remote attacker can cause a denial of service in the Showdownjs library via the anchors subparser, affecting applications using this npm package.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"tenable","cpe":[{"product":"showdown","vendor":"showdownjs"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-674","name":"Uncontrolled Recursion"}],"description":"An issue in the anchors subparser of Showdownjs versions \u003c= 2.1.0 could allow a remote attacker to cause denial of service conditions.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Showdownjs Denial of Service","id":"CVE-2024-1899","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2024"},"n_packages":2,"n_references":1,"next":{"headline":"Auth bypass in Server","id":"CVE-2024-1900"},"packages":[{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["2.1.0"],"package":"showdown","purl":null,"source":"GHSA-rmmh-p597-ppvv"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["2.1.0"],"package":"showdown","purl":"pkg:npm/showdown","source":"GHSA-rmmh-p597-ppvv"}],"prev":{"headline":"Missing authorization in Server","id":"CVE-2024-1898"},"products":["Showdown"],"published":"2024-02-26","related":[],"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-08-01","vendors":["Showdownjs"]},"summary":"A remote attacker can cause a denial of service in the Showdownjs library via the anchors subparser, affecting applications using this npm package.","url":"https://insights.sbomify.com/CVE-2024-1899/"}