Vulnerability Database

308,820

Total vulnerabilities in the database

CVE-2019-20391

An invalid memory access flaw is present in libyang before v1.0-r3 in the function resolve_feature_value() when an if-feature statement is used inside a bit. Applications that use libyang to parse untrusted input yang files may crash.

  • Published: Jan 22, 2020
  • Updated: Nov 9, 2025
  • CVE: CVE-2019-20391
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 6.5
  • AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v2:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:M/Au:N/C:N/I:N/A:P

CWEs:

Software From Fixed in
cesnet / libyang 1.0-r1 1.0-r1.x
cesnet / libyang 1.0-r2 1.0-r2.x
cesnet / libyang 0.16-r1 0.16-r1.x
cesnet / libyang 0.16-r2 0.16-r2.x
cesnet / libyang 0.16-r3 0.16-r3.x
cesnet / libyang 0.13-r1 0.13-r1.x
cesnet / libyang 0.13-r2 0.13-r2.x
cesnet / libyang 0.12-r1 0.12-r1.x
cesnet / libyang 0.12-r2 0.12-r2.x
cesnet / libyang 0.11-r1 0.11-r1.x
cesnet / libyang 0.11-r2 0.11-r2.x
cesnet / libyang 0.14-r1 0.14-r1.x
cesnet / libyang 0.15-r1 0.15-r1.x