{"answers":{"affected":"2 open source packages ship an affected version, including com.monitorjbl:xlsx-streamer. It affects 1 product.","exploited":"There is no known exploitation of CVE-2022-23640 in the wild and no public exploit code.","fix":"Upgrade com.monitorjbl:xlsx-streamer to 2.1.0 or later.","what":"CVE-2022-23640 is a critical vulnerability in monitorjbl excel-streaming-reader, published on 2 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2022-23640 and fix it if it is affected.\n\nWhat it is: CVE-2022-23640 is a critical vulnerability in monitorjbl excel-streaming-reader, published on 2 Mar 2022. 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-2022-23640 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- com.monitorjbl:xlsx-streamer (Maven): affected all versions; fixed in 2.1.0\n- com.monitorjbl:xlsx-streamer (Maven): affected all versions; fixed in 2.1.0\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-2022-23640/ (Markdown: https://insights.sbomify.com/CVE-2022-23640/index.md)","id":"CVE-2022-23640","markdown":"https://insights.sbomify.com/CVE-2022-23640/index.md","name":"CVE-2022-23640","record":{"aliases":["GHSA-xvm2-9xvc-hx7f"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Java Excel reader library","requires_auth":"none","summary":"An attacker can exploit XML External Entity vulnerabilities in the Excel-Streaming-Reader library to read sensitive data or cause denial of service.","user_interaction":"not_required","vuln_class":"xxe"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"excel_streaming_reader","vendor":"excel_streaming_reader_project"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","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-776","name":"Improper Restriction of Recursive Entity References in DTDs"},{"id":"CWE-611","name":"Improper Restriction of XML External Entity Reference"}],"description":"Excel-Streaming-Reader is an easy-to-use implementation of a streaming Excel reader using Apache POI. Prior to xlsx-streamer 2.1.0, the XML parser that was used did apply all the necessary settings to prevent XML Entity Expansion issues. Upgrade to version 2.1.0 to receive a patch. There is no known workaround.","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":"Improper Restriction of XML External Entity Reference in Excel-Streaming-Reader","id":"CVE-2022-23640","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"xxe","year":"2022"},"n_packages":2,"n_references":2,"next":{"headline":"Denial of Service in Discourse","id":"CVE-2022-23641"},"packages":[{"ecosystem":"Maven","fixed":["2.1.0"],"introduced":["0"],"last_affected":[],"package":"com.monitorjbl:xlsx-streamer","purl":null,"source":"GHSA-xvm2-9xvc-hx7f"},{"ecosystem":"Maven","fixed":["2.1.0"],"introduced":["0"],"last_affected":[],"package":"com.monitorjbl:xlsx-streamer","purl":"pkg:maven/com.monitorjbl/xlsx-streamer","source":"GHSA-xvm2-9xvc-hx7f"}],"prev":{"headline":"Improper Restriction of Operations within the Bounds of a Memory Buffer and Race Condition in crossbeam-utils","id":"CVE-2022-23639"},"products":["excel-streaming-reader"],"published":"2022-03-02","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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-04-23","vendors":["monitorjbl"]},"summary":"An attacker can exploit XML External Entity vulnerabilities in the Excel-Streaming-Reader library to read sensitive data or cause denial of service.","url":"https://insights.sbomify.com/CVE-2022-23640/"}