VDB
DEBIAN-CVE-2026-42582
DEBIAN-CVE-2026-42582
PUBLISHED
CVSS 7.5 HIGH
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.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | netty | 0, 4.1.48-10, 4.1.48-11 |
| Debian:13 | netty | 0, 4.1.48-16, 4.1.48-10 |
| Debian:11 | netty | 4.1.48-9, 4.1.48-12, 4.1.48-13 |
| Debian:12 | netty | 4.1.48-10, 4.1.48-11, 4.1.48-12 |
Timeline
- May 13, 2026 CVE Published
- May 14, 2026 CVE Updated