CVE-2026-74877

HIGH 8.8

openssl_encrypt before 1.4.0 Missing Ownership Verification via revoke_key

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-639
Vendor	jahlives
Product	openssl_encrypt
Published	Aug 17, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

jahlives / openssl_encrypt

0 < 1.4.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-hvc7-763r-4f3h vulncheck.com: https://www.vulncheck.com/advisories/openssl-encrypt-before-missing-ownership-verification-via-revoke-key