{"answers":{"affected":"2 open source packages ship an affected version, including com.mikesamuel:json-sanitizer. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-23899 in the wild and no public exploit code.","fix":"Upgrade com.mikesamuel:json-sanitizer to 1.2.2 or later.","what":"CVE-2021-23899 is a critical cross-site scripting vulnerability in n/a, published on 13 Jan 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-2021-23899 and fix it if it is affected.\n\nWhat it is: CVE-2021-23899 is a critical cross-site scripting vulnerability in n/a, published on 13 Jan 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-2021-23899 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- com.mikesamuel:json-sanitizer (Maven): affected all versions; fixed in 1.2.2\n- com.mikesamuel:json-sanitizer (Maven): affected all versions; fixed in 1.2.2\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-2021-23899/ (Markdown: https://insights.sbomify.com/CVE-2021-23899/index.md)","id":"CVE-2021-23899","markdown":"https://insights.sbomify.com/CVE-2021-23899/index.md","name":"CVE-2021-23899","record":{"aliases":["GHSA-mm8j-9x84-m9cv"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Java JSON sanitizer","requires_auth":"none","summary":"An attacker can inject arbitrary HTML or XML into embedding documents via crafted input, potentially leading to cross-site scripting attacks.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"json-sanitizer","vendor":"owasp"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-611","name":"Improper Restriction of XML External Entity Reference"}],"description":"OWASP json-sanitizer before 1.2.2 may emit closing SCRIPT tags and CDATA section delimiters for crafted input. This allows an attacker to inject arbitrary HTML or XML into embedding documents.","ecosystems":["Maven"],"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":"Arbitrary code injection in json-sanitizer","id":"CVE-2021-23899","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"xss","year":"2021"},"n_packages":2,"n_references":3,"next":{"headline":"Uncaught Exception leading to Denial of Service in json-sanitizer","id":"CVE-2021-23900"},"packages":[{"ecosystem":"Maven","fixed":["1.2.2"],"introduced":["0"],"last_affected":[],"package":"com.mikesamuel:json-sanitizer","purl":null,"source":"GHSA-mm8j-9x84-m9cv"},{"ecosystem":"Maven","fixed":["1.2.2"],"introduced":["0"],"last_affected":[],"package":"com.mikesamuel:json-sanitizer","purl":"pkg:maven/com.mikesamuel/json-sanitizer","source":"GHSA-mm8j-9x84-m9cv"}],"prev":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2021-23897"},"products":["n/a"],"published":"2021-01-13","related":[{"cvss_score":7.5,"headline":"Uncaught Exception leading to Denial of Service in json-sanitizer","id":"CVE-2021-23900","kev_date_added":null,"published":"2021-01-13"},{"cvss_score":6.1,"headline":"Cross-site scripting in json-sanitizer","id":"CVE-2020-13973","kev_date_added":null,"published":"2020-06-09"}],"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":"2024-08-03","vendors":["n/a"]},"summary":"An attacker can inject arbitrary HTML or XML into embedding documents via crafted input, potentially leading to cross-site scripting attacks.","url":"https://insights.sbomify.com/CVE-2021-23899/"}