CVE-2026-74890
openssl_encrypt versions before 1.4.0 contain an authentication bypass vulnerability in CamelliaCipher that disables HMAC tag generation and verification when the PYTEST_CURRENT_TEST environment variable is set. Attackers with code execution can set this environment variable to produce unauthenticated ciphertext and bypass integrity protection on encrypted data.
Published:Aug 17, 2026
Last Modified:Sep 1, 2026
EPS:Aug 17, 2026
EPSS Score:0.00165
CVSS Score:5.5
Affected Products
Vendor
Product
Action
Vendor
Jahlives
Product
Openssl Encrypt
Jahlives
Openssl Encrypt
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
