Vulnerability in Openssl
CVE-2026-54876
Issue summary: A malicious TLS server can cause a memory leak in a TLS client that has enabled OCSP response checking by sending an OCSP response that contains no single response entries. Impact summary: An attacker can leak an attacker-t…
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Openssl — versions 4.0.0, 3.6.0
Weakness classification (CWE)
References
- openssl-security@openssl.org (vendor-advisory)
- openssl-security@openssl.org (patch)
- openssl-security@openssl.org (patch)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2026-54876?
- CVE-2026-54876 is a high-severity vulnerability in Openssl, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2026-08-05.
- How severe is CVE-2026-54876?
- High severity. CVSS v3 base score is 7.5 out of 10.