Hi,

The following vulnerability was published for libyang.

CVE-2026-44673[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-44673
https://www.cve.org/CVERecord?id=CVE-2026-44673
[1] https://github.com/CESNET/libyang/security/advisories/GHSA-vw2p-pq79-92xh

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore