{"answers":{"affected":"2 open source packages ship an affected version, including parse-link-header. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-23490 in the wild and no public exploit code.","fix":"Upgrade parse-link-header to 2.0.0 or later.","what":"CVE-2021-23490 is a high-severity denial of service vulnerability in parse-link-header, published on 24 Dec 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-2021-23490 and fix it if it is affected.\n\nWhat it is: CVE-2021-23490 is a high-severity denial of service vulnerability in parse-link-header, published on 24 Dec 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-2021-23490 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- parse-link-header (npm): affected all versions; fixed in 2.0.0\n- parse-link-header (npm): affected all versions; fixed in 2.0.0\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-2021-23490/ (Markdown: https://insights.sbomify.com/CVE-2021-23490/index.md)","id":"CVE-2021-23490","markdown":"https://insights.sbomify.com/CVE-2021-23490/index.md","name":"CVE-2021-23490","record":{"aliases":["GHSA-q674-xm3x-2926"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"npm link header parser","requires_auth":"none","summary":"Attackers can cause denial of service in applications using the parse-link-header library by exploiting a regular expression vulnerability.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"snyk","cpe":[{"product":"parse-link-header","vendor":"parse-link-header_project"}],"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","version":"3.1"},"cwes":[{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity"}],"description":"The package parse-link-header before 2.0.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the checkHeader 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":true,"headline":"Regular Expression Denial of Service (ReDoS)","id":"CVE-2021-23490","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":2,"n_references":3,"next":{"headline":"Open Redirect","id":"CVE-2021-23495"},"packages":[{"ecosystem":"npm","fixed":["2.0.0"],"introduced":["0"],"last_affected":[],"package":"parse-link-header","purl":null,"source":"GHSA-q674-xm3x-2926"},{"ecosystem":"npm","fixed":["2.0.0"],"introduced":["0"],"last_affected":[],"package":"parse-link-header","purl":"pkg:npm/parse-link-header","source":"GHSA-q674-xm3x-2926"}],"prev":{"headline":"Arbitrary File Write via Archive Extraction (Zip Slip)","id":"CVE-2021-23484"},"products":["parse-link-header"],"published":"2021-12-24","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":"2024-09-16","vendors":["n/a"]},"summary":"Attackers can cause denial of service in applications using the parse-link-header library by exploiting a regular expression vulnerability.","url":"https://insights.sbomify.com/CVE-2021-23490/"}