Dashboard / CVE-2026-42580

CVE-2026-42580

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 73/100
Published: 2026-05-13 Modified: 2026-10-26 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: Low
A: Low

Description

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's chunk size parser silently overflows int, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

Weakness Classification (2)

Affected Software (1)

VendorProductVersion
netty netty < 4.1.133

References & Advisories (1)

Bug Bounty Relevance

73 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

EPSS — Exploitation Probability

0.38%
Raw Score 0.003780
Percentile 31.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00378
2026-10-28
0.00378

Intelligence Sources

nvd ref →

External Links