{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-49553 exists.","fix":"No fix has been published for CVE-2023-49553 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-49553 is a high-severity denial of service vulnerability in Cesanta Mjs, published on 2 Jan 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-2023-49553 and fix it if it is affected.\n\nWhat it is: CVE-2023-49553 is a high-severity denial of service vulnerability in Cesanta Mjs, published on 2 Jan 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-2023-49553 exists.\n\nAffected product: Cesanta Mjs. 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-2023-49553/ (Markdown: https://insights.sbomify.com/CVE-2023-49553/index.md)","id":"CVE-2023-49553","markdown":"https://insights.sbomify.com/CVE-2023-49553/index.md","name":"CVE-2023-49553","record":{"aliases":["GHSA-9gfv-m6hh-94gq","UBUNTU-CVE-2023-49553"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"MJS JavaScript engine","requires_auth":"none","summary":"A remote attacker can cause a denial of service in the Cesanta MJS library via the mjs_destroy function.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"mjs","vendor":"cesanta"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[],"description":"An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_destroy function in the msj.c file.","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 n/a","id":"CVE-2023-49553","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"cesanta:mjs","products":["cesanta:mjs"],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Use after free in n/a","id":"CVE-2023-49554"},"packages":[],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2023-49552"},"products":["n/a"],"published":"2024-01-02","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2023-50044","kev_date_added":null,"published":"2023-12-20"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2023-43338","kev_date_added":null,"published":"2023-09-22"},{"cvss_score":7.8,"headline":"Denial of service in n/a","id":"CVE-2021-46509","kev_date_added":null,"published":"2022-01-27"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2021-46513","kev_date_added":null,"published":"2022-01-27"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2021-46518","kev_date_added":null,"published":"2022-01-27"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2021-46519","kev_date_added":null,"published":"2022-01-27"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2021-46520","kev_date_added":null,"published":"2022-01-27"}],"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":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-06-03","vendors":["n/a"]},"summary":"A remote attacker can cause a denial of service in the Cesanta MJS library via the mjs_destroy function.","url":"https://insights.sbomify.com/CVE-2023-49553/"}