{"cve":{"cve_id":"CVE-2026-10303","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":0.00757,"epss_percentile":0.50342,"epss_as_of":"2026-06-23","description":"In ServerCo getssl version 2.49 and prior, the ACME challenge token returned to the client was not strictly validated against RFC 8555 before being used in challenge-file handling, allowing a maliciously crafted token to influence local path/filename usage during validation. An attacker who can supply ACME challenge responses to getssl (for example, a malicious or compromised CA endpoint, or an on-path adversary able to tamper with that response path) could exploit this to achieve unauthorized file write/path traversal effects, usually with elevated privileges, ultimately allowing for remote command injection. This issue appears related in spirit to CVE-2023-38198, and is an instance of CWE-73, \"External control of file name or path.\" Other ACME shell script handlers may be affected by similar issues.","published_at":"2026-06-16T18:24:43.712000Z","last_modified_at":null,"cvss_v3_score":7.4,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","cvss_v3_severity":"HIGH","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-73"],"nvd_references":["https://github.com/srvrco/getssl/pull/896","https://remyhax.xyz/posts/reproducing-lawful-tls-wiretapping/","https://www.cve.org/CVERecord?id=CVE-2023-38198","https://www.runzero.com/advisories/serverco-getssl-acme-cmd-injection-cve-2026-10303/","https://github.com/srvrco/getssl/releases/tag/v2.50"],"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":"2026-06-28T23:28:50.452867Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"H","value_label":"High"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"serverco","vendor_name":"ServerCo","product_slug":"getssl","product_name":"getssl","version_start":"0","version_start_inclusive":true,"version_end":"2.49","version_end_inclusive":true,"cpe23_uri":"cve5:serverco:getssl:0:2.49"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/srvrco/getssl/pull/896","source_type":"PATCH","tags":["patch"]},{"url":"https://remyhax.xyz/posts/reproducing-lawful-tls-wiretapping/","source_type":"MISC","tags":[]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-38198","source_type":"CONFIRM","tags":[]},{"url":"https://www.runzero.com/advisories/serverco-getssl-acme-cmd-injection-cve-2026-10303/","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/srvrco/getssl/releases/tag/v2.50","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2026-06-16T18:24:43.712000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:50:30.876171Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:50:30.876171Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:50:30.876171Z","label":"CVSS score revised","source":"cvelistv5"}]}