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.
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History
Fri, 21 Aug 2026 13:00:00 +0000
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Jahlives
Jahlives openssl Encrypt |
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Jahlives
Jahlives openssl Encrypt |
Mon, 17 Aug 2026 15:30:00 +0000
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ssvc
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Mon, 17 Aug 2026 11:15:00 +0000
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| Description | 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. | |
| Title | openssl_encrypt before 1.4.0 HMAC Authentication Bypass via Environment Variable | |
| Weaknesses | CWE-345 | |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-08-17T11:04:53.846Z
Updated: 2026-08-17T14:43:25.401Z
Reserved: 2026-08-17T10:42:40.455Z
Link: CVE-2026-74890
Updated: 2026-08-17T14:43:21.387Z
Status : Received
Published: 2026-08-17T11:16:43.960
Modified: 2026-08-17T15:16:58.903
Link: CVE-2026-74890
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