Security Bulletin: Multiple Vulnerabilities in IBM API Connect

Summary Multiple vulnerabilities were addressed in IBM API Connect version 10.0.8.11 Vulnerability Details CVEID:CVE-2020-28851 DESCRIPTION: In x/text in Go 1.15.4, an "index out of range" panic occurs in language.ParseAcceptLanguage while parsing the -u- extension. x/text/language is supposed to...

net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME

A flaw was found in the net package of Go golang, specifically when using the LookupCNAME function with the cgo DNS resolver. A remote attacker could exploit this by providing a very long Canonical Name CNAME response. This can trigger a double-free of C memory, leading to a crash and a Denial of...

github.com/quic-go/quic-go: quic-go: Denial of Service via excessive memory allocation in HTTP/3 trailers

A flaw was found in quic-go, an implementation of the QUIC protocol in Go. A remote attacker can exploit this by sending specially crafted HTTP/3 trailer fields. This can cause the system to allocate excessive memory, leading to a denial-of-service DoS condition where the affected server or clien...

net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME

A flaw was found in the net package of Go golang, specifically when using the LookupCNAME function with the cgo DNS resolver. A remote attacker could exploit this by providing a very long Canonical Name CNAME response. This can trigger a double-free of C memory, leading to a crash and a Denial of...

github.com/quic-go/quic-go: quic-go: Denial of Service via excessive memory allocation in HTTP/3 trailers

A flaw was found in quic-go, an implementation of the QUIC protocol in Go. A remote attacker can exploit this by sending specially crafted HTTP/3 trailer fields. This can cause the system to allocate excessive memory, leading to a denial-of-service DoS condition where the affected server or clien...

github.com/quic-go/quic-go: quic-go: Denial of Service via excessive memory allocation in HTTP/3 trailers

A flaw was found in quic-go, an implementation of the QUIC protocol in Go. A remote attacker can exploit this by sending specially crafted HTTP/3 trailer fields. This can cause the system to allocate excessive memory, leading to a denial-of-service DoS condition where the affected server or clien...

github.com/go-chi/chi/middleware: go-chi chi: IP spoofing via X-Forwarded-For header allows bypass of access controls

A flaw was found in the go-chi chi RealIP middleware. This vulnerability allows a remote attacker to spoof their IP address by manipulating the X-Forwarded-For HTTP header. By exploiting this, an attacker can bypass IP-based access control lists and rate-limiting mechanisms, and forge log entries...

CVE-2026-43871

A flaw was found in Apache Thrift, affecting its Python, Go, PHP, and Java components. This vulnerability, known as an 'Infinite Loop', could allow a remote attacker to disrupt service availability. By exploiting this flaw, an attacker can trigger a continuous loop, leading to a denial of service...

RLSA-2026:49526 Important: osbuild-composer security update

A service for building customized OS artifacts, such as VM images and OSTree commits, that uses osbuild under the hood. Besides building images for local usage, it can also upload images directly to cloud. It is compatible with composer-cli and cockpit-composer clients. Security Fixes: crypto/x50...

SUSE-SU-2026:3480-1 Security update for kubevirt

This update for kubevirt fixes the following issues: - Security update correcting a CVE over-claim from the previous update, verified by auditing the fix code actually present in the vendored tree: CVE-2026-39821 bsc1266575: the previous entry claimed this fixed by the golang.org/x/net v0.55.0...

SUSE-SU-2026:23162-1 Security update for helm

This update for helm fixes the following issues: Update to version 3.21.3. - CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation bsc1266598. - CVE-2026-48978: oras.land/oras-go/v2/registry/remote/auth:...

SUSE-SU-2026:23052-1 Security update for helm

This update for helm fixes the following issues Update to version 3.21.3. - CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation bsc1266598. - CVE-2026-48978: oras.land/oras-go/v2/registry/remote/auth:...

golang: net/url: Memory exhaustion in query parameter parsing in net/url

A flaw was found in the net/url package in the Go standard library. The package does not enforce a limit on the number of unique query parameters it parses. A Go application using the net/http.Request.ParseForm method will try to process all parameters provided in the request. A specially crafted...

github.com/go-jose/go-jose/v3: github.com/go-jose/go-jose/v4: Go JOSE: Denial of Service via crafted JSON Web Encryption (JWE) object

A flaw was found in Go JOSE, a library for handling JSON Web Encryption JWE objects. A remote attacker could exploit this vulnerability by providing a specially crafted JWE object. When decrypting such an object, if a key wrapping algorithm is specified but the encrypted key field is empty, the...

crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate

A flaw was found in golang. A remote attacker could exploit this vulnerability by providing a specially crafted certificate during the error string construction process within the HostnameError.Error function. This flaw, caused by unbounded string concatenation, leads to excessive resource...

crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation

A flaw was found in Go's crypto/x509 package. A remote attacker could exploit this by presenting a specially crafted certificate chain containing a large number of policy mappings. This inefficient validation process consumes excessive resources, which can lead to a denial of service DoS for...

golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: Security bypass due to improper handling of key restrictions

A flaw was found in golang.org/x/crypto/ssh/agent. When a key was added to a remote agent, security restrictions, known as constraint extensions, were not properly processed during the request. This allowed these restrictions to be silently removed when keys were forwarded, leading to the...

golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip

A flaw was found in the archive/zip package in the Go standard library. A super-linear file name indexing algorithm is used in the first time a file in an archive is opened. A crafted zip archive containing a specific arrangement of file names can cause an excessive CPU and memory consumption. A ...

crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building

A flaw was found in the Go standard library packages crypto/x509 and crypto/tls. During the process of building a certificate chain, an attacker can provide a large number of intermediate certificates. This excessive input is not properly limited, leading to an uncontrolled amount of work being...

net/url: Incorrect parsing of IPv6 host literals in net/url

The Go standard library function net/url.Parse insufficiently validated the host/authority component and accepted some invalid URLs by effectively treating garbage before an IP-literal as ignorable. The function should have rejected this as invalid...