{"cve":{"cve_id":"CVE-2026-3515","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":0.00298,"epss_percentile":0.21277,"epss_as_of":"2026-06-23","description":"A vulnerability in the `GitHubRepository` block of the `prefect-github` integration in Prefect version 3.6.18 allows an attacker to inject arbitrary git command-line options via the `reference` field. The `reference` field is concatenated directly into a `git clone` command string without proper sanitization, and then parsed by `shlex.split()`. This enables injection of options such as `-c`, leading to potential Server-Side Request Forgery (SSRF), credential theft, or remote code execution (RCE). The vulnerability affects both the `aget_directory()` and `get_directory()` methods in `src/integrations/prefect-github/prefect_github/repository.py`. This issue does not affect the GitLab and BitBucket integrations, which use a safer list-based command construction approach.","published_at":"2026-05-24T03:32:32.001000Z","last_modified_at":null,"cvss_v3_score":8.5,"cvss_v3_vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/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-88"],"nvd_references":["https://huntr.com/bounties/f3b048b8-7f4e-45ef-a5a7-cb841c39acde"],"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":"2026-06-28T23:30:01.813911Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"L","value_label":"Low"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"prefecthq","vendor_name":"prefecthq","product_slug":"prefecthq-prefect","product_name":"prefecthq/prefect","version_start":"unspecified","version_start_inclusive":true,"version_end":"latest","version_end_inclusive":true,"cpe23_uri":"cve5:prefecthq:prefecthq-prefect:unspecified:latest"}],"exploit_refs":[],"news":[],"references":[{"url":"https://huntr.com/bounties/f3b048b8-7f4e-45ef-a5a7-cb841c39acde","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-05-24T03:32:32.001000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:53:43.918028Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:53:43.918028Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:53:43.918028Z","label":"CVSS score revised","source":"cvelistv5"}]}