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TI-2026-41848 Aliases CVE-2026-58101GHSA-8wqq-45fp-2xmp

NULL pointer dereference in JONASBN Crypt::OpenSSL::X509

Priority LOW 39CWE-476Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-476.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00309 23rd 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-2026-41849 Out-of-bounds read in JONASBN Crypt::OpenSSL::X509Priority MEDIUM 45
    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-2026-58101
  2. 2026-10-03 Alias added: GHSA-8wqq-45fp-2xmp

References

Patch 1

Other 1

  • TI-2026-41849 Out-of-bounds read in JONASBN Crypt::OpenSSL::X509 CVSS 3.1CRITICAL 9.1

Sources

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