{"id":"CVE-2026-58101","summary":"Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference","details":"Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference.\n\nX509V3_EXT_d2i(ext) returns NULL when an extension's DER value fails to parse. basicC, ia5string, and auth_att dereference its result without a NULL check. keyid_data also dereferences akid-\u003ekeyid, which is NULL for an empty AKI SEQUENCE (DER 30 00) even when the parse succeeds.\n\nA caller invoking an affected helper on an extension from an untrusted certificate triggers a SIGSEGV that crashes the Perl process.","modified":"2026-07-16T03:46:22.284903793Z","published":"2026-07-13T22:17:48.375Z","database_specific":{"cna_assigner":"CPANSec","cwe_ids":["CWE-476"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58101.json"},"references":[{"type":"WEB","url":"https://cpan.org/modules"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58101.json"},{"type":"ADVISORY","url":"https://metacpan.org/release/JONASBN/Crypt-OpenSSL-X509-2.1.3/source/Changes.md"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58101"},{"type":"FIX","url":"https://github.com/dsully/perl-crypt-openssl-x509/commit/4c1e2370556097c253ae27abe9e1097ea377fbd2.patch"},{"type":"PACKAGE","url":"https://github.com/dsully/perl-crypt-openssl-x509"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/dsully/perl-crypt-openssl-x509","events":[{"introduced":"0"},{"fixed":"71c450d543472372cfd8f04ef2b6a28dac4bb16b"},{"fixed":"4c1e2370556097c253ae27abe9e1097ea377fbd2"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.1.3"}],"source":["DESCRIPTION","REFERENCES"]}}],"versions":["2.1.2","2.1.1","2.1.1-TRIAL","2.1.0-TRIAL","2.0.1","2.0.0","1.9.15","1.9.14","1.9.14-TRIAL","1.9.13","1.9.13-TRIAL","1.9.12","1.9.11","1.9.10","1.9.9","1.9.8","1.9.7","1.9.6","1.9.5","1.9.4","1.9.3","1.9.2","1.9.1","1.9","1.8.13","1.8.12","1.8.11","1.8.10","1.8.9"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-58101.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}