{"cve":{"cve_id":"CVE-2026-33055","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":0.00397,"epss_percentile":0.31374,"epss_as_of":"2026-06-23","description":"tar-rs is a tar archive reading/writing library for Rust. Versions 0.4.44 and below have conditional logic that skips the PAX size header in cases where the base header size is nonzero. As part of CVE-2025-62518, the astral-tokio-tar project was changed to correctly honor PAX size headers in the case where it was different from the base header. This is almost the inverse of the astral-tokio-tar issue. Any discrepancy in how tar parsers honor file size can be used to create archives that appear differently when unpacked by different archivers. In this case, the tar-rs (Rust tar) crate is an outlier in checking for the header size - other tar parsers (including e.g. Go archive/tar) unconditionally use the PAX size override. This can affect anything that uses the tar crate to parse archives and expects to have a consistent view with other parsers. This issue has been fixed in version 0.4.45.","published_at":"2026-03-20T07:06:08.390000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":5.1,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","cvss_v4_severity":"MEDIUM","ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-843"],"nvd_references":["https://github.com/alexcrichton/tar-rs/security/advisories/GHSA-gchp-q4r4-x4ff","https://github.com/alexcrichton/tar-rs/commit/de1a5870e603758f430073688691165f21a33946","https://www.cve.org/CVERecord?id=CVE-2025-62518"],"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":"2026-06-28T23:29:52.508034Z"},"effective_severity":"MEDIUM","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":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"N","value_label":"None"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"A","value_label":"Active"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"L","value_label":"Low"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"L","value_label":"Low"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"N","value_label":"None"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"N","value_label":"None"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"N","value_label":"None"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"}]},"affected":[{"vendor_slug":"alexcrichton","vendor_name":"alexcrichton","product_slug":"tar-rs","product_name":"tar-rs","version_start":"< 0.4.45","version_start_inclusive":true,"version_end":"< 0.4.45","version_end_inclusive":true,"cpe23_uri":"cve5:alexcrichton:tar-rs:< 0.4.45:< 0.4.45"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/alexcrichton/tar-rs/security/advisories/GHSA-gchp-q4r4-x4ff","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/alexcrichton/tar-rs/commit/de1a5870e603758f430073688691165f21a33946","source_type":"PATCH","tags":["patch"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-62518","source_type":"CONFIRM","tags":[]}],"timeline":[{"type":"published","at":"2026-03-20T07:06:08.390000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:53:09.779823Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:53:09.779823Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:53:09.779823Z","label":"CVSS score revised","source":"cvelistv5"}]}