CVE-2026-42582Disclosure(netty / netty)

LOWCVSS 7.5 · HIGH

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, when decoding header blocks, the non-Huffman branch of io.netty.handler.codec.http3.QpackDecoder#decodeHuffmanEncodedLiteral may execute new byte[length] for a string literal before verifying that length bytes are actually present in the compressed field section. The wire encoding allows a very large length to be expressed in few bytes. There is no check that length <= in.readableBytes() before new byte[length]. This vulnerability is fixed in 4.2.13.Final.

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0.0/ 10 priority

Sources & remediation

Exploit / PoC references

Weakness type (CWE)

CWE-770CWE-789

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@VulmonFeeds148d
Disclosure
CVE-2026-42582 Memory Exhaustion in Netty HTTP/3 QPACK Decoder Prior to ... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-42582 Don't wait vulnerability scanning results: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=2
Post summary
The tweet serves as a brief announcement of CVE‑2026‑42582, linking to a Vulmon detail page, but does not provide a PoC, exploit, patch, or evidence of active exploitation.
0000048
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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