{"answers":{"affected":"2 open source packages ship an affected version, including useragent. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-26311 exists.","fix":"No fix published yet.","what":"CVE-2020-26311 is a high-severity denial of service vulnerability in 3rd-Eden useragent, published on 26 Oct 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-2020-26311 and fix it if it is affected.\n\nWhat it is: CVE-2020-26311 is a high-severity denial of service vulnerability in 3rd-Eden useragent, published on 26 Oct 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-2020-26311 exists.\n\nAffected packages and fixed versions:\n- useragent (npm): affected all versions up to 2.3.0; no fix listed\n- useragent (npm): affected all versions up to 2.3.0; 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-2020-26311/ (Markdown: https://insights.sbomify.com/CVE-2020-26311/index.md)","id":"CVE-2020-26311","markdown":"https://insights.sbomify.com/CVE-2020-26311/index.md","name":"CVE-2020-26311","record":{"aliases":["CLSA-2026-1772496673","CLSA-2026-1776731779","GHSA-mgfv-m47x-4wqp"],"analysis":{"component_type":"library","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Node.js user agent parser","requires_auth":"none","summary":"Attackers can cause denial of service in applications using the useragent library by sending crafted user agent strings that trigger expensive regular expression processing.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"useragent","vendor":"useragent_project"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Green","version":"4.0"},"cwes":[{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity"}],"description":"Useragent is a user agent parser for Node.js. All versions as of time of publication contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no patches are available.","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":"GHSL-2020-312: Regular Expression Denial of Service (ReDoS) in useragent","id":"CVE-2020-26311","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2020"},"n_packages":2,"n_references":2,"next":{"headline":"GHSL-2020-254: Arbitrary file read and/or write in dotmesh","id":"CVE-2020-26312"},"packages":[{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["2.3.0"],"package":"useragent","purl":null,"source":"GHSA-mgfv-m47x-4wqp"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["2.3.0"],"package":"useragent","purl":"pkg:npm/useragent","source":"GHSA-mgfv-m47x-4wqp"}],"prev":{"headline":"GHSL-2020-305: Regular Expression Denial of Service (ReDoS) in Pure JavaScript HTML5 Parser","id":"CVE-2020-26310"},"products":["useragent"],"published":"2024-10-26","related":[{"cvss_score":7.5,"headline":"ReDoS via long UserAgent header in useragent","id":"CVE-2017-16030","kev_date_added":null,"published":"2018-06-04"}],"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-10-28","vendors":["3rd-Eden"]},"summary":"Attackers can cause denial of service in applications using the useragent library by sending crafted user agent strings that trigger expensive regular expression processing.","url":"https://insights.sbomify.com/CVE-2020-26311/"}