35
CVE-2026-4438
PoC —CVSS 3.1
5.4 medium
EPSS
<1%p24
Published
()
Modified
Description
Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C library version 2.34 to version 2.43 could result in an invalid DNS hostname being returned to the caller in violation of the DNS specification.
- Vendors
- gnu
- Products
- glibc
- Weakness
- CWE-20, CWE-88
- Vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N