{"answers":{"affected":"2 open source packages ship an affected version, including xml2js. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0842 exists.","fix":"Upgrade xml2js to 0.5.0 or later.","what":"CVE-2023-0842 is a medium-severity vulnerability in xml2js, published on 5 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-0842 and fix it if it is affected.\n\nWhat it is: CVE-2023-0842 is a medium-severity vulnerability in xml2js, published on 5 Apr 2023. 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-2023-0842 exists.\n\nAffected packages and fixed versions:\n- xml2js (npm): affected all versions; fixed in 0.5.0\n- xml2js (npm): affected all versions; fixed in 0.5.0\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-2023-0842/ (Markdown: https://insights.sbomify.com/CVE-2023-0842/index.md)","id":"CVE-2023-0842","markdown":"https://insights.sbomify.com/CVE-2023-0842/index.md","name":"CVE-2023-0842","record":{"aliases":["CLSA-2026-1773879452","CLSA-2026-1773879453","CLSA-2026-1773879454","CLSA-2026-1777336771","DEBIAN-CVE-2023-0842","DLA-3760-1","GHSA-776f-qx25-q3cc","MINI-c4m6-75h7-69h3","MINI-jhw9-83cq-vccp","UBUNTU-CVE-2023-0842"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript XML parser","requires_auth":"none","summary":"An attacker can modify object properties via prototype pollution in the xml2js library by sending crafted JSON keys.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Fluid Attacks","cpe":[{"product":"xml2js","vendor":"xml2js_project"}],"cvss":{"score":5.3,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-1321","name":"Improperly Controlled Modification of Object Prototype Attributes"}],"description":"xml2js version 0.4.23 allows an external attacker to edit or add new properties to an object. This is possible because the application does not properly validate incoming JSON keys, thus allowing the __proto__ property to be edited.","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":"xml2js 0.4.23 - Prototype Pollution","id":"CVE-2023-0842","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"other","year":"2023"},"n_packages":2,"n_references":4,"next":{"headline":"Namaste! LMS \u003c 2.6 - Admin+ Stored XSS","id":"CVE-2023-0844"},"packages":[{"ecosystem":"npm","fixed":["0.5.0"],"introduced":["0"],"last_affected":[],"package":"xml2js","purl":null,"source":"GHSA-776f-qx25-q3cc"},{"ecosystem":"npm","fixed":["0.5.0"],"introduced":["0"],"last_affected":[],"package":"xml2js","purl":"pkg:npm/xml2js","source":"GHSA-776f-qx25-q3cc"}],"prev":{"headline":"GPAC reframe_mp3.c mp3_dmx_process heap-based overflow","id":"CVE-2023-0841"},"products":["xml2js"],"published":"2023-04-05","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":"2025-12-03","vendors":["n/a"]},"summary":"An attacker can modify object properties via prototype pollution in the xml2js library by sending crafted JSON keys.","url":"https://insights.sbomify.com/CVE-2023-0842/"}