SB2026052047 - Use-after-free in libyang

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026052047

SB2026052047 - Use-after-free in libyang

Published: May 20, 2026

Security Bulletin ID SB2026052047
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use-after-free (CVE-ID: N/A)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to use-after-free in the XML data parser when parsing a crafted YANG XML document with specific metadata attributes. A remote user can send a specially crafted XML document to cause a denial of service.

Applications parsing attacker-controlled or semi-trusted XML-encoded YANG instance data are affected, including NETCONF, RESTCONF, and configuration import scenarios.


Remediation

Install update from vendor's website.

References