CVE-2026-115327

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 4.0

6.0CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

5.3CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 23% of CVEs (scores of 2026-10-25)

CWE

CWE-824

Published

2026-10-22

Modified

2026-10-22

Record from

the NVD, synced 2026-10-23

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

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