PT-2026-47647

Name of the Vulnerable Software and Affected Versions Reactor Netty versions 1.0.0 through 1.0.51 Reactor Netty versions 1.1.0 through 1.1.35 Reactor Netty versions 1.2.0 through 1.2.17 Reactor Netty versions 1.3.0 through 1.3.5 Description The Reactor Netty HTTP client may leak credentials when...

Spring Reactor Netty 信任管理问题漏洞

VMware Reactor Netty is a product of the US company VMware, which provides non-blocking and backpressure-compliant TCP/HTTP/UDP/QUIC clients and servers based on the Netty framework. Security vulnerabilities exist in versions 1.0.0 to 1.0.51, 1.1.0 to 1.1.35, 1.2.0 to 1.2.17, and 1.3.0 to 1.3.5 o...

CVE-2026-41715: Insufficiently Protected Credentials

In specific scenarios involving HTTP redirects from a secure to an insecure endpoint, the Reactor Netty HTTP client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects. Affected versions: Reactor Netty 1.0.0 through 1.0.51;...

Netty has Insufficient Bailiwick Validation for NS Records

Summary Netty's DnsResolveContext insufficiently validates the bailiwick of NS records, enabling DNS Cache Poisoning. An attacker controlling an authoritative name server for a subdomain can poison the cache for parent domains like .co.uk. Details In...

GHSA-5PVG-856G-CP85 Netty has Insufficient Bailiwick Validation for NS Records

Summary Netty's DnsResolveContext insufficiently validates the bailiwick of NS records, enabling DNS Cache Poisoning. An attacker controlling an authoritative name server for a subdomain can poison the cache for parent domains like .co.uk. Details In...

Insufficient Verification of Data Authenticity

Overview Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity in the DnsResolveContext.AuthoritativeNameServerListadd function. An attacker can inject malicious NS and A records into the DNS cache by controlling an authoritative name server for a...

GHSA-5X3R-WRVG-RP6Q Netty HTTP/2: Advertised MAX_CONCURRENT_STREAMS are not enforced

Impact DefaultHttp2Connection.DefaultEndpoint initialises maxActiveStreams/maxStreams to Integer.MAXVALUE, and Http2Settings never inserts SETTINGSMAXCONCURRENTSTREAMS by default Http2Settings.java:305-307 only clamps a user-supplied value. Unless the application explicitly calls...

Netty HTTP/2: Advertised MAX_CONCURRENT_STREAMS are not enforced

Impact DefaultHttp2Connection.DefaultEndpoint initialises maxActiveStreams/maxStreams to Integer.MAXVALUE, and Http2Settings never inserts SETTINGSMAXCONCURRENTSTREAMS by default Http2Settings.java:305-307 only clamps a user-supplied value. Unless the application explicitly calls...

Allocation of Resources Without Limits or Throttling

Overview io.netty:netty-codec-http2 is a HTTP2 sub package for the netty library, an event-driven asynchronous network application framework. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to the lack of enforcement of the advertised...

Netty: SCTP reassembly nests buffers without bound

For each non-complete SctpMessage fragment the handler does fragments.putstreamId, Unpooled.wrappedBufferfrag, byteBuf, wrapping the previous accumulator and the new slice into a new CompositeByteBuf every time. After N fragments the accumulator is an N-deep chain of composites, each holding...

GHSA-5XRH-QMMQ-W6CH Netty: SCTP reassembly nests buffers without bound

For each non-complete SctpMessage fragment the handler does fragments.putstreamId, Unpooled.wrappedBufferfrag, byteBuf, wrapping the previous accumulator and the new slice into a new CompositeByteBuf every time. After N fragments the accumulator is an N-deep chain of composites, each holding...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to unbounded nesting of composite buffers in the SCTP message reassembly process. An attacker can exhaust system memory and cause a denial of service by sending a large number of...

Insufficient Verification of Data Authenticity

Overview Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity due to missing validation of the origin of CNAME records in DNS responses within the DnsResolveContext function. An attacker can inject unauthorized DNS records by supplying malicious DNS...

Netty Vulnerable to DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records

Summary Netty's DnsResolveContext fails to validate the origin bailiwick of CNAME records in DNS responses. Details In io.netty.resolver.dns.DnsResolveContextbuildAliasMap, the resolver processes the ANSWER section of a DNS response and blindly caches all CNAME records it finds. According to...

GHSA-676X-F7GG-47VC Netty Vulnerable to DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records

Summary Netty's DnsResolveContext fails to validate the origin bailiwick of CNAME records in DNS responses. Details In io.netty.resolver.dns.DnsResolveContextbuildAliasMap, the resolver processes the ANSWER section of a DNS response and blindly caches all CNAME records it finds. According to...

GHSA-XMV7-R254-6Q78 Netty: DNS Cache Poisoning due to Predictable PRNG and Default Static Source Port

Summary Netty's DNS resolver uses a predictable PRNG for generating DNS transaction IDs and defaults to a static UDP source port. This combination reduces the entropy of DNS queries, enabling DNS Cache Poisoning Kaminsky attack. Details Two factors contribute to this vulnerability in...

Netty: DNS Cache Poisoning due to Predictable PRNG and Default Static Source Port

Summary Netty's DNS resolver uses a predictable PRNG for generating DNS transaction IDs and defaults to a static UDP source port. This combination reduces the entropy of DNS queries, enabling DNS Cache Poisoning Kaminsky attack. Details Two factors contribute to this vulnerability in...

Generation of Predictable Numbers or Identifiers

Overview Affected versions of this package are vulnerable to Generation of Predictable Numbers or Identifiers due to the use of a predictable pseudo-random number generator for DNS transaction IDs and a default static UDP source port in the DNS resolution process. An attacker can redirect network...

Netty: Unix-socket fd receive leaks descriptors when peer sends two at once

nettyunixsocketrecvFd sets msgcontrol to char controlCMSGSPACEsizeofint line 940 — 24 bytes on 64-bit Linux. A peer-sent SCMRIGHTS cmsg carrying two ints has cmsglen = CMSGLEN8 = 24, which fits exactly with no MSGCTRUNC, so the kernel installs both fds in the receiving process. The subsequent che...

Missing Release of Resource after Effective Lifetime

Overview Affected versions of this package are vulnerable to Missing Release of Resource after Effective Lifetime in the nettyunixsocketrecvFd function. An attacker can cause file descriptor leaks by sending two file descriptors at once via a Unix domain socket, leading to resource exhaustion and...