{"answers":{"affected":"2 open source packages ship an affected version, including web3-utils.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-21505 exists.","fix":"Upgrade web3-utils to 4.2.1 or later.","what":"CVE-2024-21505 is a high-severity vulnerability in web3-utils, published on 25 Mar 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-2024-21505 and fix it if it is affected.\n\nWhat it is: CVE-2024-21505 is a high-severity vulnerability in web3-utils, published on 25 Mar 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-2024-21505 exists.\n\nAffected packages and fixed versions:\n- web3-utils (npm): affected from 4.0.1; fixed in 4.2.1\n- web3-utils (npm): affected from 4.0.1; fixed in 4.2.1\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-2024-21505/ (Markdown: https://insights.sbomify.com/CVE-2024-21505/index.md)","id":"CVE-2024-21505","markdown":"https://insights.sbomify.com/CVE-2024-21505/index.md","name":"CVE-2024-21505","record":{"aliases":["GHSA-2g4c-8fpm-c46v"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript utility library","requires_auth":"none","summary":"Prototype pollution in web3-utils allows attackers to manipulate object prototypes via crafted input, potentially leading to code execution or security bypasses.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"snyk","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P","version":"3.1"},"cwes":[{"id":"CWE-1321","name":"Improperly Controlled Modification of Object Prototype Attributes"}],"description":"Versions of the package web3-utils before 4.2.1 are vulnerable to Prototype Pollution via the utility functions format and mergeDeep, due to insecure recursive merge.\rAn attacker can manipulate an object's prototype, potentially leading to the alteration of the behavior of all objects inheriting from the affected prototype by passing specially crafted input to these functions.","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":"web3-utils Prototype Pollution vulnerability","id":"CVE-2024-21505","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"other","year":"2024"},"n_packages":2,"n_references":2,"next":{"headline":"mysql2 cache poisoning vulnerability","id":"CVE-2024-21507"},"packages":[{"ecosystem":"npm","fixed":["4.2.1"],"introduced":["4.0.1"],"last_affected":[],"package":"web3-utils","purl":null,"source":"GHSA-2g4c-8fpm-c46v"},{"ecosystem":"npm","fixed":["4.2.1"],"introduced":["4.0.1"],"last_affected":[],"package":"web3-utils","purl":"pkg:npm/web3-utils","source":"GHSA-2g4c-8fpm-c46v"}],"prev":{"headline":"Cross-site Scripting in livewire/livewire","id":"CVE-2024-21504"},"products":["web3-utils"],"published":"2024-03-25","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":"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":"2024-08-23","vendors":["n/a"]},"summary":"Prototype pollution in web3-utils allows attackers to manipulate object prototypes via crafted input, potentially leading to code execution or security bypasses.","url":"https://insights.sbomify.com/CVE-2024-21505/"}