{"cve":{"cve_id":"CVE-2009-4421","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.01999,"epss_percentile":0.7816,"epss_as_of":"2026-06-23","description":"Directory traversal vulnerability in languages_cgi.php in Simple PHP Blog 0.5.1 and earlier allows remote authenticated users to include and execute arbitrary local files via a .. (dot dot) in the blog_language1 parameter.","published_at":"2009-12-24T17:00:00Z","last_modified_at":"2026-06-16T23:13:38.223000Z","cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-22"],"nvd_references":["http://www.securityfocus.com/bid/37434","http://www.securityfocus.com/archive/1/508546/100/0/threaded","http://archives.neohapsis.com/archives/fulldisclosure/2009-12/0398.html","https://exchange.xforce.ibmcloud.com/vulnerabilities/54970"],"vuln_status":"Modified","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:05:15.315230Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"alexander-palmo","vendor_name":"alexander_palmo","product_slug":"simple-php-blog","product_name":"simple_php_blog","version_start":null,"version_start_inclusive":null,"version_end":"0.5.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:alexander_palmo:simple_php_blog:*:*:*:*:*:*:*:*"},{"vendor_slug":"alexander-palmo","vendor_name":"alexander_palmo","product_slug":"simple-php-blog","product_name":"simple_php_blog","version_start":"0.3.7c","version_start_inclusive":true,"version_end":"0.3.7c","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:alexander_palmo:simple_php_blog:0.3.7c:*:*:*:*:*:*:*"},{"vendor_slug":"alexander-palmo","vendor_name":"alexander_palmo","product_slug":"simple-php-blog","product_name":"simple_php_blog","version_start":"0.4.0","version_start_inclusive":true,"version_end":"0.4.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:alexander_palmo:simple_php_blog:0.4.0:*:*:*:*:*:*:*"},{"vendor_slug":"alexander-palmo","vendor_name":"alexander_palmo","product_slug":"simple-php-blog","product_name":"simple_php_blog","version_start":"0.4.5","version_start_inclusive":true,"version_end":"0.4.5","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:alexander_palmo:simple_php_blog:0.4.5:*:*:*:*:*:*:*"},{"vendor_slug":"alexander-palmo","vendor_name":"alexander_palmo","product_slug":"simple-php-blog","product_name":"simple_php_blog","version_start":"0.4.6","version_start_inclusive":true,"version_end":"0.4.6","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:alexander_palmo:simple_php_blog:0.4.6:*:*:*:*:*:*:*"},{"vendor_slug":"alexander-palmo","vendor_name":"alexander_palmo","product_slug":"simple-php-blog","product_name":"simple_php_blog","version_start":"0.4.7","version_start_inclusive":true,"version_end":"0.4.7","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:alexander_palmo:simple_php_blog:0.4.7:*:*:*:*:*:*:*"},{"vendor_slug":"alexander-palmo","vendor_name":"alexander_palmo","product_slug":"simple-php-blog","product_name":"simple_php_blog","version_start":"0.4.7.1","version_start_inclusive":true,"version_end":"0.4.7.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:alexander_palmo:simple_php_blog:0.4.7.1:*:*:*:*:*:*:*"},{"vendor_slug":"alexander-palmo","vendor_name":"alexander_palmo","product_slug":"simple-php-blog","product_name":"simple_php_blog","version_start":"0.5.0.1","version_start_inclusive":true,"version_end":"0.5.0.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:alexander_palmo:simple_php_blog:0.5.0.1:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"http://www.securityfocus.com/bid/37434","source_type":"MISC","tags":[]},{"url":"http://www.securityfocus.com/archive/1/508546/100/0/threaded","source_type":"MISC","tags":[]},{"url":"http://archives.neohapsis.com/archives/fulldisclosure/2009-12/0398.html","source_type":"MISC","tags":[]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/54970","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2009-12-24T17:00:00Z","label":"CVE published","source":null}]}