CVE-2026-79771

Nokogiri versions before 1.19.3 contain a memory leak in the XSLT Stylesheet transform method when processing Ruby strings containing null bytes. Attackers can exploit this by passing attacker-controlled input with null bytes to transform parameters, causing heap allocations to leak and enabling denial of service against long-running processes.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-v2fc-qm4h-8hqv	Vendor Advisory
https://www.vulncheck.com/advisories/nokogiri-before-memory-leak-via-xslt-transform	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:*

History

No history.

Information

Published : 2026-08-25 16:17

Updated : 2026-09-01 14:55

NVD link : CVE-2026-79771

Mitre link : CVE-2026-79771

CVE.ORG link : CVE-2026-79771

JSON object : View

Products Affected

nokogiri

nokogiri

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

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