{"cve":{"cve_id":"CVE-2026-4176","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":0.00811,"epss_percentile":0.56085,"epss_as_of":"2026-10-15","description":"Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib.\n\nCompress::Raw::Zlib is included in the Perl package as a dual-life core module, and is vulnerable to CVE-2026-3381 due to a vendored version of zlib which has several vulnerabilities, including CVE-2026-27171. The bundled Compress::Raw::Zlib was updated to version 2.221 in Perl blead commit c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94.","published_at":"2026-03-29T20:50:51.058000Z","last_modified_at":null,"cvss_v3_score":9.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"total","cwes":["CWE-1395"],"nvd_references":["https://www.cve.org/CVERecord?id=CVE-2026-3381","https://lists.security.metacpan.org/cve-announce/msg/37638919/","https://github.com/Perl/perl5/commit/c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94","https://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes","https://metacpan.org/release/SHAY/perl-5.40.4/changes","https://metacpan.org/release/SHAY/perl-5.42.2/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":"2026-06-29T23:46:59.033383Z"},"effective_severity":"CRITICAL","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":"L","value_label":"Low"},{"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":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"shay","vendor_name":"SHAY","product_slug":"perl","product_name":"perl","version_start":"5.9.4","version_start_inclusive":true,"version_end":"5.40.4-RC1","version_end_inclusive":false,"cpe23_uri":"cve5:shay:perl:5.9.4:5.40.4-RC1"},{"vendor_slug":"shay","vendor_name":"SHAY","product_slug":"perl","product_name":"perl","version_start":"5.41.0","version_start_inclusive":true,"version_end":"5.42.2-RC1","version_end_inclusive":false,"cpe23_uri":"cve5:shay:perl:5.41.0:5.42.2-RC1"},{"vendor_slug":"shay","vendor_name":"SHAY","product_slug":"perl","product_name":"perl","version_start":"5.43.0","version_start_inclusive":true,"version_end":"5.43.9","version_end_inclusive":false,"cpe23_uri":"cve5:shay:perl:5.43.0:5.43.9"}],"exploit_refs":[],"news":[],"references":[{"url":"https://www.cve.org/CVERecord?id=CVE-2026-3381","source_type":"CONFIRM","tags":[]},{"url":"https://lists.security.metacpan.org/cve-announce/msg/37638919/","source_type":"MAILING_LIST","tags":["mailing-list"]},{"url":"https://github.com/Perl/perl5/commit/c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94","source_type":"PATCH","tags":["patch"]},{"url":"https://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes","source_type":"MISC","tags":[]},{"url":"https://metacpan.org/release/SHAY/perl-5.40.4/changes","source_type":"MISC","tags":[]},{"url":"https://metacpan.org/release/SHAY/perl-5.42.2/changes","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-03-29T20:50:51.058000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:55:10.688071Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:55:10.688071Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:55:10.688071Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"}]}