{"api_version":"1","generated_at":"2026-07-23T13:02:54+00:00","cve":"CVE-2021-23191","urls":{"html":"https://cve.report/CVE-2021-23191","api":"https://cve.report/api/cve/CVE-2021-23191.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-23191","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-23191"},"summary":{"title":"CVE-2021-23191","description":"A security issue was found in htmldoc v1.9.12 and before. A NULL pointer dereference in the function image_load_jpeg() in image.cxx may result in denial of service.","state":"PUBLIC","assigner":"secalert@redhat.com","published_at":"2022-03-02 23:15:00","updated_at":"2022-03-10 19:31:00"},"problem_types":["CWE-476"],"metrics":[],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1967022","name":"https://bugzilla.redhat.com/show_bug.cgi?id=1967022","refsource":"MISC","tags":[],"title":"1967022 – (CVE-2021-23191) CVE-2021-23191 htmldoc: null pointer dereference in function image_load_jpeg()","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/michaelrsweet/htmldoc/commit/369b2ea1fd0d0537ba707f20a2f047b6afd2fbdc","name":"https://github.com/michaelrsweet/htmldoc/commit/369b2ea1fd0d0537ba707f20a2f047b6afd2fbdc","refsource":"MISC","tags":[],"title":"Fix JPEG error handling (Issue #415) · michaelrsweet/htmldoc@369b2ea · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://ubuntu.com/security/CVE-2021-23191","name":"https://ubuntu.com/security/CVE-2021-23191","refsource":"MISC","tags":[],"title":"CVE-2021-23191 | Ubuntu","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/michaelrsweet/htmldoc/issues/415","name":"https://github.com/michaelrsweet/htmldoc/issues/415","refsource":"MISC","tags":[],"title":"AddressSanitizer: SEGV on unknown address 0x000000000014    · Issue #415 · michaelrsweet/htmldoc · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-23191","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23191","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"23191","vulnerable":"1","versionEndIncluding":"1.9.12","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"htmldoc_project","cpe5":"htmldoc","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-23191","qid":"178664","title":"Debian Security Update for htmldoc (DSA 4928-1)"},{"cve":"CVE-2021-23191","qid":"178690","title":"Debian Security Update for htmldoc (DLA 2700-1)"},{"cve":"CVE-2021-23191","qid":"180310","title":"Debian Security Update for htmldoc (CVE-2021-23191)"}]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2021-23191","ASSIGNER":"secalert@redhat.com","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"n/a","product":{"product_data":[{"product_name":"htmldoc","version":{"version_data":[{"version_value":"Fixed in htmldoc v1.9.12 and later."}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-476 - NULL Pointer Dereference"}]}]},"references":{"reference_data":[{"refsource":"MISC","name":"https://github.com/michaelrsweet/htmldoc/issues/415","url":"https://github.com/michaelrsweet/htmldoc/issues/415"},{"refsource":"MISC","name":"https://github.com/michaelrsweet/htmldoc/commit/369b2ea1fd0d0537ba707f20a2f047b6afd2fbdc","url":"https://github.com/michaelrsweet/htmldoc/commit/369b2ea1fd0d0537ba707f20a2f047b6afd2fbdc"},{"refsource":"MISC","name":"https://bugzilla.redhat.com/show_bug.cgi?id=1967022","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1967022"},{"refsource":"MISC","name":"https://ubuntu.com/security/CVE-2021-23191","url":"https://ubuntu.com/security/CVE-2021-23191"}]},"description":{"description_data":[{"lang":"eng","value":"A security issue was found in htmldoc v1.9.12 and before. A NULL pointer dereference in the function image_load_jpeg() in image.cxx may result in denial of service."}]}},"nvd":{"publishedDate":"2022-03-02 23:15:00","lastModifiedDate":"2022-03-10 19:31:00","problem_types":["CWE-476"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":6.8},"severity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:htmldoc_project:htmldoc:*:*:*:*:*:*:*:*","versionEndIncluding":"1.9.12","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"23191","Ordinal":"205413","Title":"CVE-2021-23191","CVE":"CVE-2021-23191","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"23191","Ordinal":"1","NoteData":"** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.","Type":"Description","Title":null}]}}}