CVE-2026-74877
openssl_encrypt before 1.4.0 Missing Ownership Verification via revoke_key
- State
- Published
- Severity
- 8.7 High
- Published
- Aug 17, 2026
- Updated
- Oct 8, 2026
- Reserved
- Aug 17, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
openssl_encryptjahlives |
|
References
- GitHub Security Advisory (GHSA-hvc7-763r-4f3h)vendor-advisory
- VulnCheck Advisory: openssl_encrypt before 1.4.0 Missing Ownership Verification via revoke_keythird-party-advisory
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