{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42497", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "state": "PUBLISHED", "assignerShortName": "CPANSec", "dateReserved": "2026-04-27T18:34:48.417Z", "datePublished": "2026-05-26T00:17:50.656Z", "dateUpdated": "2026-05-26T00:17:50.656Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "packageName": "Archive-Tar", "product": "Archive::Tar", "programFiles": ["lib/Archive/Tar.pm"], "programRoutines": [{"name": "Archive::Tar::_make_special_file"}, {"name": "Archive::Tar::_extract_file"}], "repo": "https://github.com/jib/archive-tar-new", "vendor": "BINGOS", "versions": [{"lessThan": "3.08", "status": "affected", "version": "0", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory.\n\n_make_special_file() passes the tar header's linkname to link() without validating it against absolute paths or .. segments, creating a hardlink that shares the victim file's inode.\n\nA subsequent write through the extracted name modifies the victim file, and the post-extraction chmod, chown, and utime block in _extract_file() (guarded only against symlinks via -l) applies the tar header's mode, owner, and timestamps to the shared inode during extraction alone."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-59", "description": "CWE-59 Improper Link Resolution Before File Access ('Link Following')", "lang": "en", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-732", "description": "CWE-732 Incorrect Permission Assignment for Critical Resource", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-05-26T00:17:50.656Z"}, "references": [{"tags": ["patch"], "url": "https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch"}, {"tags": ["release-notes"], "url": "https://metacpan.org/release/BINGOS/Archive-Tar-3.08/changes"}, {"tags": ["related"], "url": "https://www.cve.org/CVERecord?id=CVE-2026-42496"}], "solutions": [{"lang": "en", "value": "Upgrade to Archive::Tar 3.08 or later."}], "source": {"discovery": "UNKNOWN"}, "timeline": [{"lang": "en", "time": "2026-04-12T00:00:00.000Z", "value": "Issue reported."}, {"lang": "en", "time": "2026-05-10T00:00:00.000Z", "value": "Version 3.06 released, disabling hardlink extraction by default."}, {"lang": "en", "time": "2026-05-22T00:00:00.000Z", "value": "Version 3.08 released."}], "title": "Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory", "x_generator": {"engine": "cpansec-cna-tool 0.1"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory.\n\n_make_special_file() passes the tar header's linkname to link() without validating it against absolute paths or .. segments, creating a hardlink that shares the victim file's inode.\n\nA subsequent write through the extracted name modifies the victim file, and the post-extraction chmod, chown, and utime block in _extract_file() (guarded only against symlinks via -l) applies the tar header's mode, owner, and timestamps to the shared inode during extraction alone."}], "id": "CVE-2026-42497", "lastModified": "2026-05-26T02:16:40.250", "metrics": {}, "published": "2026-05-26T02:16:40.250", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/BINGOS/Archive-Tar-3.08/changes"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://www.cve.org/CVERecord?id=CVE-2026-42496"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}, {"lang": "en", "value": "CWE-732"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{}