Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow a heap out-of-bounds read via a long certificate extension OID in hv_exts
Summary
| CVE | CVE-2026-58102 |
|---|---|
| State | PUBLISHED |
| Assigner | CPANSec |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-13 23:16:47 UTC |
| Updated | 2026-07-13 23:16:47 UTC |
| Description | Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow a heap out-of-bounds read via a long certificate extension OID in hv_exts. When building the extension hash (via extensions(), extensions_by_long_name(), extensions_by_oid(), or has_extension_oid()), the code passes OBJ_obj2txt()'s return value as the hash-key length; because that value is the OID's full text length rather than the bytes written to the fixed-size buffer (129 bytes), an OID whose text is longer than the 129-byte buffer causes a read past the allocation, exposing adjacent heap memory as the returned hash key. extensions_by_name() uses the static shortname path and is not affected. |
Risk And Classification
Problem Types: CWE-125 | CWE-125 CWE-125 Out-of-bounds Read
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | JONASBN | CryptOpenSSLX509 | affected 2.1.3 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/dsully/perl-crypt-openssl-x509/commit/757289bfce095455c104d4a... | 9b29abf9-4ab0-4765-b253-1875cd9b441e | github.com | |
| metacpan.org/release/JONASBN/Crypt-OpenSSL-X509-2.1.3/source/Changes.md | 9b29abf9-4ab0-4765-b253-1875cd9b441e | metacpan.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
Solutions
CNA: Upgrade to Crypt::OpenSSL::X509 2.1.3 or later.
Workarounds
CNA: Callers that must enumerate extensions of untrusted certificates can restrict enumeration to extensions_by_name(), which uses the static shortname path and does not trigger the over-read.
There are currently no legacy QID mappings associated with this CVE.