{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-30421 exists.","fix":"No fix has been published for CVE-2023-30421 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-30421 is a low-severity denial of service vulnerability in mjson, published on 19 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-30421 and fix it if it is affected.\n\nWhat it is: CVE-2023-30421 is a low-severity denial of service vulnerability in mjson, published on 19 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-30421 exists.\n\nAffected product: mjson. 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-2023-30421/ (Markdown: https://insights.sbomify.com/CVE-2023-30421/index.md)","id":"CVE-2023-30421","markdown":"https://insights.sbomify.com/CVE-2023-30421/index.md","name":"CVE-2023-30421","record":{"aliases":["GHSA-rqfj-9wmv-vpgp"],"analysis":{"component_type":"library","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"mjson library","requires_auth":"none","summary":"An attacker can cause a denial of service in the mjson library by providing specific digit strings that trigger excessive processing iterations.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[],"cvss":{"score":2.9,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-407","name":"Inefficient Algorithmic Complexity"}],"description":"mystrtod in mjson 1.2.7 requires more than a billion iterations during processing of certain digit strings such as 8891110122900e913013935755114.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Denial of service in mjson","id":"CVE-2023-30421","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":2,"next":{"headline":"Apache Pulsar Broker: Incorrect Authorization Validation for Rest Producer","id":"CVE-2023-30428"},"packages":[],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2023-30417"},"products":["mjson"],"published":"2025-04-19","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-04-21","vendors":["mjson project"]},"summary":"An attacker can cause a denial of service in the mjson library by providing specific digit strings that trigger excessive processing iterations.","url":"https://insights.sbomify.com/CVE-2023-30421/"}