Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-50010— Netty's wrapping plain trust manager silently disables hostname verification

Quick assessment

Affected
netty netty
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Netty是Netty团队开源的一款非阻塞I/O客户端-服务器框架, 它主要用于开发Java网络应用程序,如协议服务器和客户端等。 Netty 4.1.135.Final之前版本和4.2.15.Final之前版本存在加密问题漏洞，该漏洞源于SimpleTrustManagerFactory.engineGetTrustManagers()相关路径将用户提供的纯X509TrustManager包裹在X509TrustManagerWrapper中，但X509ExtendedTrustManager包装后未能

CVSS 7.5 · High EPSS 0.72% · P52

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 2

VendorProduct Version RangeStatus
netty netty >= 4.2.0.Final, < 4.2.15.Final affected
< 4.1.135.Final affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-50010

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Netty's wrapping plain trust manager silently disables hostname verification
Source: CVE Program / CVE List V5
Vulnerability Description
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, SimpleTrustManagerFactory.engineGetTrustManagers() and related paths wrap any user-supplied plain X509TrustManager in X509TrustManagerWrapper, which extends X509ExtendedTrustManager but implements the 3-arg checkServerTrusted(chain, authType, SSLEngine) by discarding the SSLEngine and calling the 2-arg delegate. Because the object now IS an X509ExtendedTrustManager, neither SunJSSE's internal AbstractTrustManagerWrapper nor Netty's own OpenSslX509TrustManagerWrapper will re-wrap it to add endpoint-identification. Consequently, even though Netty 4.2 sets endpointIdentificationAlgorithm="HTTPS" by default, a client built with `SslContextBuilder.forClient().trustManager(somePlainX509TrustManager)` performs no hostname verification at all. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
netty 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Netty是Netty团队开源的一款非阻塞I/O客户端-服务器框架, 它主要用于开发Java网络应用程序,如协议服务器和客户端等。 Netty 4.1.135.Final之前版本和4.2.15.Final之前版本存在加密问题漏洞，该漏洞源于SimpleTrustManagerFactory.engineGetTrustManagers()相关路径将用户提供的纯X509TrustManager包裹在X509TrustManagerWrapper中，但X509ExtendedTrustManager包装后未能
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
netty netty >= 4.2.0.Final, < 4.2.15.Final -

II. Public POCs for CVE-2026-50010

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 10046 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-50010

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-50010 (1)

Vendor Pages for CVE-2026-50010 (2)

Same Patch Batch · netty · 2026-06-12 · 19 CVEs total

CVE-2026-45674 8.7 HIGH Netty Vulnerable to DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records
CVE-2026-47691 8.7 HIGH Netty has Insufficient Bailiwick Validation for NS Records
CVE-2026-48059 8.7 HIGH Netty HAProxy: Unbalanced Reference Count in Nested PP2_TYPE_SSL TLV Parsing Leads to Memo
CVE-2026-48006 8.7 HIGH Netty's Lack of Lifecycle Cleanup Leads to Pooled ByteBuf Leak in RedisArrayAggregator
CVE-2026-44892 7.5 HIGH Netty has a Vulnerable Default Configuration Which Leads to Denial of Service via Unbounde
CVE-2026-44894 7.5 HIGH Netty's Default QUIC token handler accepts any client-supplied token
CVE-2026-44893 7.5 HIGH Netty: HAProxy SSL TLV parsing leaks retained slice on invalid TLV length
CVE-2026-46340 7.5 HIGH Netty: SCTP reassembly nests buffers without bound
CVE-2026-50011 7.5 HIGH Netty has unbounded pre-allocation in RedisArrayAggregator from RESP array length
CVE-2026-48748 7.5 HIGH Netty HTTP/3 QPACK Blocked Streams Memory Exhaustion
CVE-2026-45416 7.5 HIGH Netty: SNI handler pre-allocates up to 16 MiB from nine attacker bytes
CVE-2026-45673 6.8 MEDIUM Netty: DNS Cache Poisoning due to Predictable PRNG and Default Static Source Port
CVE-2026-48043 5.3 MEDIUM netty-codec-http2: ByteBuf Reference-Count Leak in DelegatingDecompressorFrameListener Lea
CVE-2026-50020 5.3 MEDIUM Netty's HttpObjectDecoder skips arbitrary initial control characters when only initial CRL
CVE-2026-47244 5.3 MEDIUM Netty HTTP/2: Advertised MAX_CONCURRENT_STREAMS are not enforced
CVE-2026-50009 4.8 MEDIUM Netty QUIC stateless reset token material exposed through header-visible connection IDs
CVE-2026-45536 4.0 MEDIUM Netty: Unix-socket fd receive leaks descriptors when peer sends two at once
CVE-2026-50560 Netty susceptible to HTTP/2 Reset Attack with different on-the-wire signature

IV. Related Vulnerabilities

Same product: netty
Same vendor: netty
Same weakness: CWE-347

V. Comments for CVE-2026-50010

No comments yet

Leave a comment