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TI-2026-52618 Aliases CVE-2026-74901GHSA-jw8h-gwjw-g7rc

openssl_encrypt before 1.4.0 Authentication Bypass via AES-CTR Fallback

Priority MEDIUM 48CWE-347Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-347.

Summary

openssl_encrypt versions before 1.4.0 contain an authentication bypass vulnerability in pqc.py where AES-GCM decryption failures trigger fallback to unauthenticated AES-CTR mode. Attackers can modify ciphertext in transit to bypass integrity verification and perform bit-flipping attacks without detection.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00405 34th percentileScored 2026-11-07
Fix Fixed openssl_encrypt (jahlives): 1.4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
jahlivesopenssl_encryptbefore 1.4.01.4.0Patch availableCNA
  • openssl_encrypt Vendorjahlives Affected before 1.4.0 Fixed in 1.4.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:python:*:*before 1.4.0Vulnerablejahlives
  • cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:python:*:* Versions before 1.4.0 Vulnerable ·jahlives

Remediation

  • Fix · CNA openssl_encrypt (jahlives) Fixed in 1.4.0

Fixed in the same release

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

  • Release ·

    jahlives openssl_encrypt 1.4.0

    28 records Highest priority Priority HIGH 3 HIGH, 21 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2026-52616 openssl_encrypt before 1.4.0 Sandbox Escape via Type HierarchyPriority HIGH 81
    • TI-2026-52615 openssl_encrypt before 1.4.0 Sandbox Escape via Dunder Attribute TraversalPriority HIGH 81
    • TI-2026-52602 openssl_encrypt before 1.4.0 Sandbox Bypass via pathlib and ioPriority HIGH 79
    Show all 28 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-74901
  2. 2026-10-03 Alias added: GHSA-jw8h-gwjw-g7rc

References

Advisory 1

  • TI-2026-52616 openssl_encrypt before 1.4.0 Sandbox Escape via Type Hierarchy CVSS 4.0CRITICAL 9.3
  • TI-2026-52615 openssl_encrypt before 1.4.0 Sandbox Escape via Dunder Attribute Traversal CVSS 4.0CRITICAL 9.3
  • TI-2026-52602 openssl_encrypt before 1.4.0 Sandbox Bypass via pathlib and io CVSS 4.0HIGH 8.7
  • TI-2026-52617 openssl_encrypt before 1.4.0 Weak Shared Secret via PQC Simulation Mode CVSS 4.0CRITICAL 9.3
  • TI-2026-52614 openssl_encrypt before 1.4.0 Plugin Sandbox Bypass via Process Isolation CVSS 4.0CRITICAL 9.3
  • TI-2026-52613 openssl_encrypt before 1.4.0 Authentication Bypass via Bearer Token CVSS 4.0CRITICAL 9.3
See all 59 →

Sources

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