6.9
Medium
CVE-2026-116542 Netty netty-tcnative before 2.0.84.Final contains an SNI hostname spoofing vulnerability that allows remote…
Description
Netty netty-tcnative before 2.0.84.Final contains an SNI hostname spoofing vulnerability that allows remote unauthenticated clients to alter hostnames via JNI NewStringUTF decoding. Attackers can send overlong encodings like 0xC0 0x80 in the ClientHello server_name to confuse SNI-based certificate selection, access decisions, and logging.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| netty-tcnative 2.0 | earliest → < 2.0.84.Final | 2.0.84.Final |
| netty-tcnative-boringssl-static 2.0 | earliest → < 2.0.84.Final | 2.0.84.Final |
References
- GitHub Security Advisory (GHSA-2784-hxmm-4hgf) github.com
- Patch Commit github.com
- github.com github.com
- netty-tcnative netty-tcnative-parent-2.0.84.Final Release Notes github.com
- github.com github.com
- VulnCheck Advisory: Netty netty-tcnative before 2.0.84.Final SNI Hostname Spoofing via Modified UTF-8 Decoding www.vulncheck.com
Timeline
- Published
- Last modified
Other CVEs of netty-tcnative
The 4 CVEs of netty-tcnative →
CVE-2026-116541
Netty netty-tcnative before 2.0.84.Final contains a denial of service vulnerability in the tcn_write_to_bytebuffer BIO…
8.2
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CVE-2026-116540
netty-tcnative 2.0.66.Final before 2.0.84.Final built against OpenSSL 3.x contains a use-after-free vulnerability in…
8.2
High
CVE-2026-116539
Netty netty-tcnative before 2.0.84.Final contains a heap buffer overflow vulnerability in the tcn_write_to_bytebuffer…
8.2
High