{"answers":{"affected":"2 open source packages ship an affected version, including class-transformer. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-7637 in the wild and no public exploit code.","fix":"Upgrade class-transformer to 0.3.1 or later.","what":"CVE-2020-7637 is a medium-severity vulnerability in class-transformer, published on 6 Apr 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-2020-7637 and fix it if it is affected.\n\nWhat it is: CVE-2020-7637 is a medium-severity vulnerability in class-transformer, published on 6 Apr 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-2020-7637 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- class-transformer (npm): affected all versions; fixed in 0.3.1\n- class-transformer (npm): affected all versions; fixed in 0.3.1\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-2020-7637/ (Markdown: https://insights.sbomify.com/CVE-2020-7637/index.md)","id":"CVE-2020-7637","markdown":"https://insights.sbomify.com/CVE-2020-7637/index.md","name":"CVE-2020-7637","record":{"aliases":["GHSA-6gp3-h3jj-prx4","SNYK-JS-CLASSTRANSFORMER-564431"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript class transformer","requires_auth":"none","summary":"Attackers can exploit prototype pollution in class-transformer to potentially execute code or escalate privileges via crafted __proto__ payloads.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"snyk","cpe":[{"product":"class-transformer","vendor":"class-transformer_project"}],"cvss":{"score":5.3,"severity":"medium","source":"nvd","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":"class-transformer before 0.3.1 allow attackers to perform Prototype Pollution. The classToPlainFromExist function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.","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 class-transformer","id":"CVE-2020-7637","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"other","year":"2020"},"n_packages":2,"n_references":2,"next":{"headline":"confinit vulnerable to prototype pollution","id":"CVE-2020-7638"},"packages":[{"ecosystem":"npm","fixed":["0.3.1"],"introduced":["0"],"last_affected":[],"package":"class-transformer","purl":null,"source":"GHSA-6gp3-h3jj-prx4"},{"ecosystem":"npm","fixed":["0.3.1"],"introduced":["0"],"last_affected":[],"package":"class-transformer","purl":"pkg:npm/class-transformer","source":"GHSA-6gp3-h3jj-prx4"}],"prev":{"headline":"OS Command Injection in adb-driver","id":"CVE-2020-7636"},"products":["class-transformer"],"published":"2020-04-06","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 exploit prototype pollution in class-transformer to potentially execute code or escalate privileges via crafted __proto__ payloads.","url":"https://insights.sbomify.com/CVE-2020-7637/"}