CVE-2026-42580Disclosure(netty / netty)

LOWCVSS 6.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.0/ 10 priority

Sources & remediation

Exploit / PoC references

Weakness type (CWE)

CWE-190CWE-444

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

netty

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Affected systems

Vendors

netty

Products

netty

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets2 URLs

By indicator

Full discourse1 post

Vulmon Vulnerability Feed@VulmonFeeds147d
Disclosure
CVE-2026-42580 Request Smuggling via Integer Overflow in Netty Before http://4.2.13.Final https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-42580
Post summary
The post highlights CVE-2026-42580 as a request smuggling flaw driven by an integer overflow in Netty, but offers no PoC, exploit, or remediation details.
0000062
4.0K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	netty	netty	-	-	-

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