Vulnerability DatabaseCVE-2026-74877
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CVE-2026-74877
Published:August 17, 2026
Updated:September 02, 2026
openssl_encrypt versions before 1.4.0 contain a missing ownership verification vulnerability in the revoke_key method that allows authenticated clients to revoke any other client's key. Attackers can revoke arbitrary keys by providing a valid ML-DSA signature, bypassing the intended ownership restriction.
Affected Packages
openssl-encrypt (PYTHON):
Affected version(s) >=0.2.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
Related Resources (6)
https://github.com/jahlives/openssl_encrypt
https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-hvc7-763r-4f3h
https://github.com/jahlives/openssl_encrypt/commit/05e45f393886b5bf7e924d2dd42099a9dd37f91d
https://www.vulncheck.com/advisories/openssl-encrypt-before-missing-ownership-verification-via-revoke-key
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74877.json
https://nvd.nist.gov/vuln/detail/CVE-2026-74877
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
UNREPORTED
CVSS v3
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Missing Authorization
CWE-862
Authorization Bypass Through User-Controlled Key
CWE-639
EPSS
Base Score:
0.25