{"answers":{"affected":"2 open source packages ship an affected version, including Proto. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-23426 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-23426 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-23426 is a medium-severity vulnerability in Proto, published on 1 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-23426 and fix it if it is affected.\n\nWhat it is: CVE-2021-23426 is a medium-severity vulnerability in Proto, published on 1 Sep 2021. 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-2021-23426 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Proto (npm): affected all versions up to 1.1.4; no fix listed\n- Proto (npm): affected all versions up to 1.1.4; no fix listed\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-2021-23426/ (Markdown: https://insights.sbomify.com/CVE-2021-23426/index.md)","id":"CVE-2021-23426","markdown":"https://insights.sbomify.com/CVE-2021-23426/index.md","name":"CVE-2021-23426","record":{"aliases":["GHSA-58g2-9fqr-36q2"],"analysis":{"component_type":"library","fix_type":"no_fix_stated","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"npm Proto library","requires_auth":"none","summary":"Attackers can pollute object properties via the merge function in the Proto npm library, potentially leading to code execution or privilege escalation.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"snyk","cpe":[{"product":"proto","vendor":"proto_project"}],"cvss":{"score":5.6,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:U/RC:C","version":"3.1"},"cwes":[],"description":"This affects all versions of package Proto. It is possible to inject pollute the object property of an application using Proto by leveraging the merge function.","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":false,"headline":"Prototype Pollution","id":"CVE-2021-23426","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"other","year":"2021"},"n_packages":2,"n_references":2,"next":{"headline":"Arbitrary File Write via Archive Extraction (Zip Slip)","id":"CVE-2021-23427"},"packages":[{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["1.1.4"],"package":"Proto","purl":null,"source":"GHSA-58g2-9fqr-36q2"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["1.1.4"],"package":"Proto","purl":"pkg:npm/Proto","source":"GHSA-58g2-9fqr-36q2"}],"prev":{"headline":"Regular Expression Denial of Service (ReDoS)","id":"CVE-2021-23425"},"products":["Proto"],"published":"2021-09-01","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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-16","vendors":["n/a"]},"summary":"Attackers can pollute object properties via the merge function in the Proto npm library, potentially leading to code execution or privilege escalation.","url":"https://insights.sbomify.com/CVE-2021-23426/"}