8.2
High
CVE-2026-118374 LibreSSL ocspcheck through 4.4.0 contains a memory exhaustion vulnerability that allows malicious OCSP responders to…
Description
LibreSSL ocspcheck through 4.4.0 contains a memory exhaustion vulnerability that allows malicious OCSP responders to exhaust memory by sending unbounded HTTP responses. Attackers controlling the responder or intercepting plain HTTP AIA OCSP traffic can stream endless headers or body data to http_head_read() and http_body_read(), denying certificate status checks.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| LibreSSL 4.4 | earliest → 4.4.0 | No fix stated |
Other CVEs of LibreSSL
The 4 CVEs of LibreSSL →
CVE-2026-118373
LibreSSL ocspcheck through 4.4.0 Cleartext Transmission of OCSP Requests via url2host()
6.3
Medium
CVE-2026-118372
LibreSSL ocspcheck through 4.4.0 contains a CRLF injection vulnerability that allows attackers to inject HTTP headers by…
6.3
Medium
CVE-2026-118371
LibreSSL through 4.4.0 contains a CRLF injection vulnerability in the libcrypto OCSP_sendreq_new() and…
6.3
Medium