{"answers":{"affected":"2 open source packages ship an affected version, including ajv. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-15366 in the wild and no public exploit code.","fix":"Upgrade ajv to 6.12.3 or later.","what":"CVE-2020-15366 is a medium-severity code injection vulnerability in n/a, published on 15 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-15366 and fix it if it is affected.\n\nWhat it is: CVE-2020-15366 is a medium-severity code injection vulnerability in n/a, published on 15 Jul 2020. 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-2020-15366 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- ajv (npm): affected all versions; fixed in 6.12.3\n- ajv (npm): affected all versions; fixed in 6.12.3\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-2020-15366/ (Markdown: https://insights.sbomify.com/CVE-2020-15366/index.md)","id":"CVE-2020-15366","markdown":"https://insights.sbomify.com/CVE-2020-15366/index.md","name":"CVE-2020-15366","record":{"aliases":["CLSA-2026-1784596282","CLSA-2026-1784683069","CLSA-2026-1789034358","CLSA-2026-1792163462","DEBIAN-CVE-2020-15366","GHSA-v88g-cgmw-v5xw","ROOT-APP-NPM-CVE-2020-15366","UBUNTU-CVE-2020-15366"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"JSON Schema Validator","requires_auth":"none","summary":"Attackers can execute arbitrary code via prototype pollution in Ajv by providing a crafted JSON schema, affecting applications using this library.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ajv","vendor":"ajv.js"}],"cvss":{"score":5.6,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-1321","name":"Improperly Controlled Modification of Object Prototype Attributes"}],"description":"An issue was discovered in ajv.validate() in Ajv (aka Another JSON Schema Validator) 6.12.2. A carefully crafted JSON schema could be provided that allows execution of other code by prototype pollution. (While untrusted schemas are recommended against, the worst case of an untrusted schema should be a denial of service, not execution of code.)","ecosystems":["npm"],"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":"Prototype Pollution in Ajv","id":"CVE-2020-15366","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"code_injection","year":"2020"},"n_packages":2,"n_references":4,"next":{"headline":"Security feature bypass in n/a","id":"CVE-2020-15367"},"packages":[{"ecosystem":"npm","fixed":["6.12.3"],"introduced":["0"],"last_affected":[],"package":"ajv","purl":null,"source":"GHSA-v88g-cgmw-v5xw"},{"ecosystem":"npm","fixed":["6.12.3"],"introduced":["0"],"last_affected":[],"package":"ajv","purl":"pkg:npm/ajv","source":"GHSA-v88g-cgmw-v5xw"}],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2020-15365"},"products":["n/a"],"published":"2020-07-15","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Attackers can execute arbitrary code via prototype pollution in Ajv by providing a crafted JSON schema, affecting applications using this library.","url":"https://insights.sbomify.com/CVE-2020-15366/"}