CVE-2026-115327

EUVD-2026-108129
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
5.3 MEDIUM
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 22.3%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
cesnetlibyang
𝑥
≤ 6.4.13
CNA
Debian logo
Debian Releases
Debian Product
Codename
libyang
forky
vulnerable
sid
vulnerable
trixie
no-dsa
libyang2
bookworm
vulnerable
Common Weakness Enumeration
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/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