CVE-2026-41401— libyang - Heap Use-After-Free Write in XML Metadata Parsing
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-41401
Vulnerability Information
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Vulnerability Title
libyang - Heap Use-After-Free Write in XML Metadata Parsing
Source: NVD (National Vulnerability Database)
Vulnerability Description
libyang before 5.2.6 contains a heap use-after-free write vulnerability in lyd_parser_set_data_flags that incorrectly updates metadata list pointers when freeing non-head default metadata entries. Attackers can trigger this vulnerability by submitting crafted YANG XML documents with specific metadata attributes to applications parsing untrusted XML data, causing process crashes or potential code execution.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-41401
| # | POC Description | Source Link | Shenlong Link |
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Vendor Advisories for CVE-2026-41401 (3)
IV. Related Vulnerabilities
V. Comments for CVE-2026-41401
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