{"answers":{"affected":"4 open source packages ship an affected version, including html-parse-stringify and html-parse-stringify2. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-23346 in the wild and no public exploit code.","fix":"Upgrade html-parse-stringify to 2.0.1 or later.","what":"CVE-2021-23346 is a medium-severity denial of service vulnerability in html-parse-stringify, published on 4 Mar 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-2021-23346 and fix it if it is affected.\n\nWhat it is: CVE-2021-23346 is a medium-severity denial of service vulnerability in html-parse-stringify, published on 4 Mar 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-2021-23346 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- html-parse-stringify (npm): affected all versions; fixed in 2.0.1\n- html-parse-stringify (npm): affected all versions; fixed in 2.0.1\n- html-parse-stringify2 (npm): affected all versions up to 2.0.1; no fix listed\n- html-parse-stringify2 (npm): affected all versions up to 2.0.1; 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-2021-23346/ (Markdown: https://insights.sbomify.com/CVE-2021-23346/index.md)","id":"CVE-2021-23346","markdown":"https://insights.sbomify.com/CVE-2021-23346/index.md","name":"CVE-2021-23346","record":{"aliases":["GHSA-545q-3fg6-48m7"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"HTML parsing library","requires_auth":"none","summary":"An attacker can cause a denial of service by sending specific input that triggers excessive backtracking in the HTML parsing regular expressions.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"snyk","cpe":[{"product":"html-parse-stringify","vendor":"html-parse-stringify_project"}],"cvss":{"score":4.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:R","version":"3.1"},"cwes":[],"description":"This affects the package html-parse-stringify before 2.0.1; all versions of package html-parse-stringify2. Sending certain input could cause one of the regular expressions that is used for parsing to backtrack, freezing the process.","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-2021-23346","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":4,"n_references":6,"next":{"headline":"Cross-site Scripting (XSS)","id":"CVE-2021-23347"},"packages":[{"ecosystem":"npm","fixed":["2.0.1"],"introduced":["0"],"last_affected":[],"package":"html-parse-stringify","purl":null,"source":"GHSA-545q-3fg6-48m7"},{"ecosystem":"npm","fixed":["2.0.1"],"introduced":["0"],"last_affected":[],"package":"html-parse-stringify","purl":"pkg:npm/html-parse-stringify","source":"GHSA-545q-3fg6-48m7"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["2.0.1"],"package":"html-parse-stringify2","purl":null,"source":"GHSA-545q-3fg6-48m7"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["2.0.1"],"package":"html-parse-stringify2","purl":"pkg:npm/html-parse-stringify2","source":"GHSA-545q-3fg6-48m7"}],"prev":{"headline":"Server-side Request Forgery (SSRF)","id":"CVE-2021-23345"},"products":["html-parse-stringify","html-parse-stringify2"],"published":"2021-03-04","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":"An attacker can cause a denial of service by sending specific input that triggers excessive backtracking in the HTML parsing regular expressions.","url":"https://insights.sbomify.com/CVE-2021-23346/"}