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TI-2026-41849 Aliases CVE-2026-58102GHSA-crh7-2j46-hqrj

Out-of-bounds read in JONASBN Crypt::OpenSSL::X509

Priority MEDIUM 45CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00341 27th percentileScored 2026-11-07
Fix Fixed Crypt::OpenSSL::X509 (JONASBN): 2.1.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JONASBNCrypt::OpenSSL::X509before 2.1.32.1.3Patch availableCNA
  • Crypt::OpenSSL::X509 VendorJONASBN Affected before 2.1.3 Fixed in 2.1.3 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:*:*:*:*:*:perl:*:* openssl\VulnerableJONASBN
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:*:*:*:*:*:perl:*:* Versions openssl\ Vulnerable ·JONASBN

Remediation

  • Fix · CNA Crypt::OpenSSL::X509 (JONASBN) Fixed in 2.1.3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    JONASBN Crypt::OpenSSL::X509 2.1.3

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-41848 NULL pointer dereference in JONASBN Crypt::OpenSSL::X509Priority LOW 39
    Show all 2 records →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-58102
  2. 2026-10-03 Alias added: GHSA-crh7-2j46-hqrj

References

Patch 1

Other 1

  • TI-2026-41848 NULL pointer dereference in JONASBN Crypt::OpenSSL::X509 CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences