{"api_version":"1","generated_at":"2026-07-21T22:56:58+00:00","cve":"CVE-2026-59145","urls":{"html":"https://cve.report/CVE-2026-59145","api":"https://cve.report/api/cve/CVE-2026-59145.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-59145","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-59145"},"summary":{"title":"Data::Intern::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalidated slot, reverse and arena indices in si_idx_find","description":"Data::Intern::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalidated slot, reverse and arena indices in si_idx_find.\n\nThe attach-time validator si_validate_header is thorough about the header and layout (magic, version, section offsets, total_size, count and arena_used) but does not validate the three arrays it then trusts. Every lookup in si_idx_find walks a triple indirection read straight from the mmap'd segment, arena[reverse[slots[i].id]], with no bound on slots[i].id against count, on the reverse[id] arena offset against arena_used, or on the arena record's length prefix.\n\nA local peer that can write the backing file can leave the header valid while poisoning a slot id, a reverse offset or an arena length prefix, so an id_of, intern or string lookup dereferences the chain out of bounds; because string() returns a file-controlled length of bytes from the arena, adjacent process memory can be disclosed.","state":"PUBLISHED","assigner":"CPANSec","published_at":"2026-07-21 20:17:03","updated_at":"2026-07-21 20:17:03"},"problem_types":["CWE-125","CWE-125 CWE-125 Out-of-bounds Read"],"metrics":[],"references":[{"url":"https://metacpan.org/release/EGOR/Data-Intern-Shared-0.02/diff/EGOR/Data-Intern-Shared-0.01#intern.h","name":"https://metacpan.org/release/EGOR/Data-Intern-Shared-0.02/diff/EGOR/Data-Intern-Shared-0.01#intern.h","refsource":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://metacpan.org/release/EGOR/Data-Intern-Shared-0.02/changes","name":"https://metacpan.org/release/EGOR/Data-Intern-Shared-0.02/changes","refsource":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-59145","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59145","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"EGOR","product":"Data::Intern::Shared","version":"affected 0.02 custom","platforms":[]}],"timeline":[],"solutions":[{"source":"CNA","title":"","value":"Upgrade to Data::Intern::Shared 0.02 or later, which bounds the slot id, the reverse offset and the record length before each dereference and caps the hash-slot probe.","time":"","lang":"en"}],"workarounds":[{"source":"CNA","title":"","value":"For deployments that cannot upgrade to 0.02, place the backing file in a directory writable only by the owning user, so a local peer cannot tamper with the slot, reverse and arena contents the lookup path reads.","time":"","lang":"en"}],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","packageName":"Data-Intern-Shared","product":"Data::Intern::Shared","programFiles":["intern.h"],"programRoutines":[{"name":"si_idx_find"}],"repo":"https://github.com/vividsnow/perl5-data-intern-shared","vendor":"EGOR","versions":[{"lessThan":"0.02","status":"affected","version":"0","versionType":"custom"}]}],"descriptions":[{"lang":"en","value":"Data::Intern::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalidated slot, reverse and arena indices in si_idx_find.\n\nThe attach-time validator si_validate_header is thorough about the header and layout (magic, version, section offsets, total_size, count and arena_used) but does not validate the three arrays it then trusts. Every lookup in si_idx_find walks a triple indirection read straight from the mmap'd segment, arena[reverse[slots[i].id]], with no bound on slots[i].id against count, on the reverse[id] arena offset against arena_used, or on the arena record's length prefix.\n\nA local peer that can write the backing file can leave the header valid while poisoning a slot id, a reverse offset or an arena length prefix, so an id_of, intern or string lookup dereferences the chain out of bounds; because string() returns a file-controlled length of bytes from the arena, adjacent process memory can be disclosed."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","description":"CWE-125 Out-of-bounds Read","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-07-21T19:04:39.549Z","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","shortName":"CPANSec"},"references":[{"url":"https://metacpan.org/release/EGOR/Data-Intern-Shared-0.02/diff/EGOR/Data-Intern-Shared-0.01#intern.h"},{"tags":["release-notes"],"url":"https://metacpan.org/release/EGOR/Data-Intern-Shared-0.02/changes"}],"solutions":[{"lang":"en","value":"Upgrade to Data::Intern::Shared 0.02 or later, which bounds the slot id, the reverse offset and the record length before each dereference and caps the hash-slot probe."}],"source":{"discovery":"UNKNOWN"},"title":"Data::Intern::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalidated slot, reverse and arena indices in si_idx_find","workarounds":[{"lang":"en","value":"For deployments that cannot upgrade to 0.02, place the backing file in a directory writable only by the owning user, so a local peer cannot tamper with the slot, reverse and arena contents the lookup path reads."}],"x_generator":{"engine":"cpansec-cna-tool 0.1"}}},"cveMetadata":{"assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","assignerShortName":"CPANSec","cveId":"CVE-2026-59145","datePublished":"2026-07-21T19:04:39.549Z","dateReserved":"2026-07-02T16:24:17.913Z","dateUpdated":"2026-07-21T19:04:39.549Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-21 20:17:03","lastModifiedDate":"2026-07-21 20:17:03","problem_types":["CWE-125","CWE-125 CWE-125 Out-of-bounds Read"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"59145","Ordinal":"1","Title":"Data::Intern::Shared versions before 0.02 for Perl allow an out-","CVE":"CVE-2026-59145","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"59145","Ordinal":"1","NoteData":"Data::Intern::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalidated slot, reverse and arena indices in si_idx_find.\n\nThe attach-time validator si_validate_header is thorough about the header and layout (magic, version, section offsets, total_size, count and arena_used) but does not validate the three arrays it then trusts. Every lookup in si_idx_find walks a triple indirection read straight from the mmap'd segment, arena[reverse[slots[i].id]], with no bound on slots[i].id against count, on the reverse[id] arena offset against arena_used, or on the arena record's length prefix.\n\nA local peer that can write the backing file can leave the header valid while poisoning a slot id, a reverse offset or an arena length prefix, so an id_of, intern or string lookup dereferences the chain out of bounds; because string() returns a file-controlled length of bytes from the arena, adjacent process memory can be disclosed.","Type":"Description","Title":"Data::Intern::Shared versions before 0.02 for Perl allow an out-"}]}}}