{"cve":{"cve_id":"CVE-2026-8727","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":0.00389,"epss_percentile":0.30632,"epss_as_of":"2026-06-23","description":"The Crawler extension passes the X-T3Crawler-Meta response header from crawled URLs directly to PHP's unserialize(). An attacker controlling a crawled endpoint can inject arbitrary serialized PHP objects, leading to Remote Code Execution on the TYPO3 server. Exploitation requires administrative privileges to configure a crawler-enabled page and trigger the crawl via a Scheduler task.","published_at":"2026-05-19T09:16:33.677000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":7.1,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","cvss_v4_severity":"HIGH","ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-502"],"nvd_references":["https://typo3.org/security/advisory/typo3-ext-sa-2026-008"],"vuln_status":null,"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":"2026-06-28T23:31:10.151094Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"H","value_label":"High"},{"metric":"AT","name":"Attack Requirements","value":"P","value_label":"Present"},{"metric":"PR","name":"Privileges Required","value":"H","value_label":"High"},{"metric":"UI","name":"User Interaction","value":"A","value_label":"Active"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"H","value_label":"High"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"L","value_label":"Low"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"L","value_label":"Low"},{"metric":"SA","name":"Availability (Subsequent System)","value":"L","value_label":"Low"}]},"affected":[{"vendor_slug":"typo3","vendor_name":"TYPO3","product_slug":"extension-site-crawler","product_name":"Extension \"Site Crawler\"","version_start":"12.0.0","version_start_inclusive":true,"version_end":"12.0.11","version_end_inclusive":false,"cpe23_uri":"cve5:typo3:extension-site-crawler:12.0.0:12.0.11"},{"vendor_slug":"typo3","vendor_name":"TYPO3","product_slug":"extension-site-crawler","product_name":"Extension \"Site Crawler\"","version_start":"0","version_start_inclusive":true,"version_end":"11.0.13","version_end_inclusive":false,"cpe23_uri":"cve5:typo3:extension-site-crawler:0:11.0.13"}],"exploit_refs":[],"news":[],"references":[{"url":"https://typo3.org/security/advisory/typo3-ext-sa-2026-008","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-05-19T09:16:33.677000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:56:22.639448Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:56:22.639448Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:56:22.639448Z","label":"CVSS score revised","source":"cvelistv5"}]}