CVE-2019-20395

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

A stack consumption issue is present in libyang before v1.0-r1 due to the self-referential union type containing leafrefs. Applications that use libyang to parse untrusted input yang files may crash.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-674

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://bugzilla.redhat.com/show_bug.cgi?id=1793924Issue Tracking, Third Party Advisory
https://github.com/CESNET/libyang/commit/4e610ccd87a2ba9413819777d508f71163fcc237Third Party Advisory
https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1Third Party Advisory
https://github.com/CESNET/libyang/issues/724Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html
https://bugzilla.redhat.com/show_bug.cgi?id=1793924Issue Tracking, Third Party Advisory
https://github.com/CESNET/libyang/commit/4e610ccd87a2ba9413819777d508f71163fcc237Third Party Advisory
https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1Third Party Advisory
https://github.com/CESNET/libyang/issues/724Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html

Timeline

Published: Jan 22, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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