Vulnerability Description
libyang through 6.4.13 contains an uninitialized pointer free vulnerability in lydxml_env_netconf_rpc() in src/parser_xml.c when parsing NETCONF rpc action envelopes. Peers with a NETCONF session can send an action element containing non-whitespace text via lyd_parse_op() to crash servers like netopeer2 or corrupt the heap.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/CESNET/libyang
- https://github.com/CESNET/libyang/blob/v6.4.13/src/parser_xml.c#L1196-L1224
- https://github.com/CESNET/libyang/blob/v6.4.13/src/parser_xml.c#L1330-L1342
- https://github.com/CESNET/libyang/commit/927fce908774289a7d9c07fff5704c33965c977
- https://github.com/CESNET/libyang/issues/2595
- https://hackmd.io/@haindpwn/libyang-netconf-rpc-envelope-uninit-free
- https://www.vulncheck.com/advisories/libyang-through-6.4.13-uninitialized-pointe
- https://hackmd.io/@haindpwn/cve-2026-115327-libyang-netconf-rpc-envelope-uninit-
FAQ
What is CVE-2026-115327?
CVE-2026-115327 is a vulnerability with a CVSS score of 5.3 (MEDIUM). libyang through 6.4.13 contains an uninitialized pointer free vulnerability in lydxml_env_netconf_rpc() in src/parser_xml.c when parsing NETCONF rpc action envelopes. Peers with a NETCONF session can ...
How severe is CVE-2026-115327?
CVE-2026-115327 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-115327?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.