{"answers":{"affected":"2 open source packages ship an affected version, including meteor. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-4727 exists.","fix":"No fix has been published for CVE-2025-4727 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-4727 is a medium-severity denial of service vulnerability in Meteor, published on 15 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-4727 and fix it if it is affected.\n\nWhat it is: CVE-2025-4727 is a medium-severity denial of service vulnerability in Meteor, published on 15 May 2025. 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-2025-4727 exists.\n\nAffected packages and fixed versions:\n- meteor (npm): affected all versions up to 3.2.1; no fix listed\n- meteor (npm): affected all versions up to 3.2.1; 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-2025-4727/ (Markdown: https://insights.sbomify.com/CVE-2025-4727/index.md)","id":"CVE-2025-4727","markdown":"https://insights.sbomify.com/CVE-2025-4727/index.md","name":"CVE-2025-4727","record":{"aliases":["GHSA-j3v9-6gc7-vf5f"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Meteor framework","requires_auth":"none","summary":"Remote attackers can cause denial of service in Meteor applications via inefficient regular expression complexity in the livedata server.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[{"product":"meteor","vendor":"meteor"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"},{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity"}],"description":"A vulnerability was found in Meteor up to 3.2.1 and classified as problematic. This issue affects the function Object.assign of the file packages/ddp-server/livedata_server.js. The manipulation of the argument forwardedFor leads to inefficient regular expression complexity. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.2.2 is able to address this issue. The identifier of the patch is f7ea6817b90952baaea9baace2a3b4366fee6a63. It is recommended to upgrade the affected component.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Meteor livedata_server.js Object.assign redos","id":"CVE-2025-4727","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":2,"n_references":7,"next":{"headline":"SourceCodester Best Online News Portal search.php sql injection","id":"CVE-2025-4728"},"packages":[{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["3.2.1"],"package":"meteor","purl":null,"source":"GHSA-j3v9-6gc7-vf5f"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["3.2.1"],"package":"meteor","purl":"pkg:npm/meteor","source":"GHSA-j3v9-6gc7-vf5f"}],"prev":{"headline":"itsourcecode Placement Management System view_student.php sql injection","id":"CVE-2025-4726"},"products":["Meteor"],"published":"2025-05-15","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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-05-16","vendors":["n/a"]},"summary":"Remote attackers can cause denial of service in Meteor applications via inefficient regular expression complexity in the livedata server.","url":"https://insights.sbomify.com/CVE-2025-4727/"}