Medium [CVE-2026-79769] Process crash due to invalid memory read via programming error in internal method
This medium-severity Red Hat Linux advisory covers CVE-2026-79769 affecting Red Hat 3scale API Management Platform 2, Red Hat Satellite 6.
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Summary
Nokogiri versions before 1.19.4 contain a possible invalid (out-of-bounds) memory read in the protected internal Node#initialize_copy_with_args helper behind Node#dup and #clone, which unwrapped its source argument as an xmlNode without a type check.
If application code calls this protected method with a non-Node argument (e.g., a Namespace), it reads an xmlNs out of bounds, crashing the process. This is only triggerable by a programming error and cannot be triggered by untrusted input or normal use of the public API.
Only CRuby is affected. Version 1.19.4 adds a type check and raises TypeError.
A flaw was found in Nokogiri. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-843. Affected Red Hat products: Red Hat 3scale API Management Platform 2; Red Hat Satellite 6.
Will not fix / out of support: Red Hat 3scale API Management Platform 2. Red Hat does not currently list a fixing RHSA for this CVE.
- < 1.19.4
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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