Threats affecting pkg:github/cesnet/libyang

CVE-2026-115327 is a vulnerability in CESNET's libyang library up to version 6.4.13. It involves an uninitialized pointer free flaw in the function lydxml_env_netconf_rpc() when parsing NETCONF RPC action envelopes. This flaw allows a peer with a NETCONF session to send crafted action elements containing non-whitespace text that can crash servers such as netopeer2 or cause heap corruption.

libyang is a YANG data modeling language library. Prior to SO 5.2.15, lyb_read_string() in src/parser_lyb.c contains an integer overflow that results in a heap buffer overflow when parsing a maliciously crafted LYB binary blob. An attacker who can supply LYB data to any libyang consumer (NETCONF server, sysrepo, etc.) can trigger a crash or potential heap corruption. This vulnerability is fixed in SO 5.2.15.