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CVE-2026-58101

7.5 high SSVC exploitation: none Analyzed
NVD · CVE.org

Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference. X509V3_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->keyid, which is NULL for an empty AKI SEQUENCE (DER 30 00) even when the parse succeeds. A caller invoking an affected helper on an extension from an untrusted certificate triggers a SIGSEGV that crashes the Perl process.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.5 · jonasbnNVD modified 2026-10-24 22:10

Affected (CPE criteria) 1

  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:*:*:*:*:*:perl:*:*

References 2