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Vulnerabilities CVE-2026-79771

CVE-2026-79771

Medium
Open
TLP:CLEAR

Nokogiri before 1.19.3 Memory Leak via XSLT Transform

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Description

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.

Details

CVSS Score
6.9
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Confidence
90%
Published
Aug 25, 2026
Last Modified
Aug 25, 2026
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