Dashboard / CVE-2026-56848

CVE-2026-56848

HIGH
MEDIUM Priority: 0.04 BB Relevance: 75/100
Published: 2026-08-04 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

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**.

Weakness Classification (1)

References & Advisories (1)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.52%
Raw Score 0.005210
Percentile 44.2%
Date 2026-10-30

EPSS Trend

2026-10-30
0.00521
2026-10-29
0.00521
2026-10-28
0.00521

Intelligence Sources

nvd ref →

External Links