CVE-2026-56848
HIGH
7.5
CVSS Score
Published: August 4, 2026 at 03:57 PM UTC
Updated: October 24, 2026 at 04:10 PM UTC
1 product affected across 1 vendorNode.js
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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%
SSVC
No known exploit
Description
A flaw in Node.js HTTP/2 handling allows `nghttp2_session_mem_send()` to be called re-entrantly while `nghttp2_session_mem_recv()` is executing, resulting in a heap-use-after-free. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (1)
Source: cverecord
https://nodejs.org/en/blog/vulnerability/july-2026-security-releasesSSVC — Action Prioritization
SSVCNo known exploitAutomatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.5HIGHhackerone
Vector?
Quick Info
StatusAWAITING ANALYSIS
CWE
CWE-416
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