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Product · OpenBSD

LibreSSL

4 known vulnerabilities.

LibreSSL at a glance

Last 12 months
4
Critical · all time
0
Exploited · all time
0
Public exploit · all time
0
New vulnerabilities per month · last 12 months
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All Critical High Medium Low Exploited only Public exploit

4 results · Feed

  • Medium 5.9
    CVE-2026-118374

    LibreSSL ocspcheck through 4.4.0 Memory Exhaustion via Unbounded OCSP HTTP Response

    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…

    OpenBSD LibreSSL
  • Low 3.7
    CVE-2026-118373

    LibreSSL ocspcheck through 4.4.0 Cleartext Transmission of OCSP Requests via url2host()

    LibreSSL ocspcheck through 4.4.0 contains a cleartext transmission vulnerability because url2host() discards the OCSP URL scheme and http_alloc() only selects TLS for port 443. On-path network attackers can read OCSP requests sent to https responder URLs on n…

    OpenBSD LibreSSL
  • Low 3.7
    CVE-2026-118372

    LibreSSL ocspcheck through 4.4.0 CRLF Injection via AIA OCSP URL Path

    LibreSSL ocspcheck through 4.4.0 contains a CRLF injection vulnerability that allows attackers to inject HTTP headers by embedding CR/LF sequences in a certificate's AIA OCSP URI path. Because url2host() copies the path without rejecting control characters an…

    OpenBSD LibreSSL
  • Low 3.7
    CVE-2026-118371

    LibreSSL through 4.4.0 CRLF Injection via OCSP_sendreq_new() Request Line

    LibreSSL through 4.4.0 contains a CRLF injection vulnerability in the libcrypto OCSP_sendreq_new() and OCSP_parse_url() functions, which write unvalidated request paths into the OCSP POST request line. Attackers can embed carriage return and line feed charact…

    OpenBSD LibreSSL