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.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 4
- StatusAwaiting Analysis → PublishedNVD modified 2026-10-22 10:57
- StatusPublished → Awaiting AnalysisNVD modified 2026-10-22 17:39
- StatusReceived → PublishedNVD modified 2026-10-22 10:57
- First seenCVSS 6.0NVD modified 2026-10-22 11:17
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 7
- 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/927fce908774289a7d9c07fff5704c33965c9773
- 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-pointer-free-in-netconf-rpc-parser