Critical [CVE-2026-105482 +3] Vulnerabilities in Node.js Affecting Cisco Products: October 2026
This critical-severity Cisco advisory covers CVE-2026-105482 and CVE-2026-105483 and 2 more CVEs.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 4 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.
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Summary
On October 21, 2026, Node.js announced the availability of fixes for multiple vulnerabilities across the following supported release lines: 22.x, 24.x, and 26.x.
These vulnerabilities impact critical operations such as the Brotli decoder, DNS resolution, and TLS certificate validation. The vulnerabilities pose risks for remote code execution and traffic interception.
For more information, see Node.js Security Release.
The following vulnerabilities have a Security Impact Rating (SIR) of High and are addressed in this advisory:
- CVE-2026-111497 - Brotli decoder out-of-bounds write; potential remote code execution
- CVE-2026-105482 - DNS resolution truncation involving embedded NUL characters
- CVE-2026-105483 - TLS hostname validation bypass using fullwidth IP digits
- CVE-2026-106069 - TLS hostname validation bypass with noncanonical IP addresses
For information about Splunk products and offerings, see Vulnerabilities in Node.js (CVE-2026-111497, CVE-2026-105482, CVE-2026-105483, CVE-2026-106069) on Splunk Products - October 2026
Important: If a product is not listed within this advisory, Cisco's review indicates that the product is not affected by this vulnerability.
This advisory will be updated as additional information becomes available.
CISA Known Exploited Vulnerability
- Listed:
- Oct 27, 2026 · federal remediation due Nov 10, 2026
- Required action:
- Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
KEV is a prioritization signal from CISA. Remediation detail comes from the vendor advisory.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 11 hours ago·verify at source
- 10-202610
Official advisory · high-confidence parse· fetched 11 hours ago·verify at source
Mitigation checklist
- Any workarounds will be documented in the product-specific Cisco bugs, which are identified in the Vulnerable Products section of this advisory.
Official advisory · high-confidence parse· fetched 11 hours ago·verify at source
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