Missing Ownership Verification in OpenSSL Encrypt Affects Significant Client Key Management
CVE-2026-74877

8.7HIGH

Key Information:

Vendor

Jahlives

Status
OpenSSL Encrypt
Vendor
CVE Published:
17 August 2026

What is CVE-2026-74877?

The OpenSSL Encrypt library prior to version 1.4.0 contains a vulnerability in the revoke_key method that fails to properly verify ownership. This flaw permits authenticated clients to revoke any other client's key, using a valid ML-DSA signature. The lack of adequate checks allows attackers to compromise the integrity of key management by arbitrarily revoking keys, which could severely impact the security of systems relying on this functionality.

Affected Version(s)

openssl_encrypt 0 < 1.4.0

openssl_encrypt 1.4.0

References

https://github.com/jahlives/openssl_encrypt/security/advi...
vendor-advisory
https://www.vulncheck.com/advisories/openssl-encrypt-befo...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.