CVE-2026-44452

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 8dc37cb, when h2o receives a ClientHello message over TLS or QUIC and it contains a zero-length SNI extension, the h2o server runs over the zero-length hostname while trying to copy the hostname, assuming that it ...

CVE-2026-44452 h2o is vulnerable to heap overrun

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 8dc37cb, when h2o receives a ClientHello message over TLS or QUIC and it contains a zero-length SNI extension, the h2o server runs over the zero-length hostname while trying to copy the hostname, assuming that it ...

CLSA-2021-1639686040 Fix CVE(s): CVE-2021-3984, CVE-2021-3973, CVE-2021-3974, CVE-2021-4019, CVE-2021-4069

SECURITY UPDATE: Using freed memory with regexp using a mark - debian/patches/CVE-2021-3974.patch: Get the line again after getting the mark position - CVE-2021-3974 SECURITY UPDATE: Illegal memory access when C-indenting - debian/patches/CVE-2021-3984.patch: Also set the cursor column -...

CVE-2018-8970

The intx509paramsethosts function in lib/libcrypto/x509/x509vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain...

openldap: modrdn processing IA5StringNormalize NULL pointer dereference

OpenLDAP 2.4.22 allows remote attackers to cause a denial of service crash via a modrdn call with a zero-length RDN destination string, which is not properly handled by the smrnormalize function and triggers a NULL pointer dereference in the IA5StringNormalize function in schemainit.c, as...