{"cve":{"cve_id":"CVE-2017-20240","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":0.00319,"epss_percentile":0.23473,"epss_as_of":"2026-06-23","description":"Crypt::PBKDF2 versions before 0.261630 for Perl are vulnerable to timing attacks.\n\nThese versions use Perl's built-in eq comparison. Discrepancies in timing could be used to guess the underlying derived-key.","published_at":"2026-06-12T13:19:15.900000Z","last_modified_at":null,"cvss_v3_score":5.9,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","cvss_v3_severity":"MEDIUM","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":false,"ssvc_technical_impact":"partial","cwes":["CWE-208"],"nvd_references":["https://github.com/arodland/Crypt-PBKDF2/pull/6","https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.161520/source/lib/Crypt/PBKDF2.pm#L123-148","https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes"],"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":"2026-06-28T23:09:55.104345Z"},"effective_severity":"MEDIUM","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":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"arodland","vendor_name":"ARODLAND","product_slug":"crypt-pbkdf2","product_name":"Crypt::PBKDF2","version_start":"0","version_start_inclusive":true,"version_end":"0.261630","version_end_inclusive":false,"cpe23_uri":"cve5:arodland:crypt-pbkdf2:0:0.261630"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/arodland/Crypt-PBKDF2/pull/6","source_type":"PATCH","tags":["patch"]},{"url":"https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.161520/source/lib/Crypt/PBKDF2.pm#L123-148","source_type":"MISC","tags":[]},{"url":"https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-12T13:19:15.900000Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-06-24T00:31:08.600596Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:31:08.600596Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:31:08.600596Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:08.600596Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:08.600596Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:08.600596Z","label":"CVSS score revised","source":"vulnrichment"}]}