Threats Tagged 'cve-2026-39825'

CVE-2026-33818 is a high-severity denial-of-service vulnerability in the Go standard library component encoding/asn1. It is part of a set of vulnerabilities affecting various Go language components addressed by Red Hat Hardened Images RPMs updates. The flaw allows an attacker to cause uncontrolled resource consumption leading to DoS via malformed inputs. A patch is available from Red Hat to remediate this and related issues.

This update includes the following RPMs: golang1.25: * golang1.25-1.25.11-2.hum1 (aarch64, x86_64) * golang1.25-bin-1.25.11-2.hum1 (aarch64, x86_64) * golang1.25-docs-1.25.11-2.hum1 (noarch) * golang1.25-misc-1.25.11-2.hum1 (noarch) * golang1.25-src-1.25.11-2.hum1 (noarch) * golang1.25-tests-1.25.11-2.hum1 (noarch) * golang1.25-1.25.11-2.hum1.src (src)

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.19.48. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2026:68540 Security Fix(es): * net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811) * encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (CVE-2026-33818) * net/mail: golang: Go net/mail: Denial of Service via crafted email inputs (CVE-2026-39820) * golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821) * net/mail: golang: net/mail: Denial of Service via pathological email address parsing (CVE-2026-42499) * mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header (CVE-2026-42504) * html/template: golang: Go html/template: Cross-Site Scripting via pathological input (CVE-2026-56858) * encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue (CVE-2026-56859) * net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution (CVE-2026-56860) * crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. All OpenShift Container Platform 4.19 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html-single/updating_clusters/index#updating-cluster-cli.

Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which add new features and enhancements, bug fixes, and updated container images. See the following Release Notes documentation, which will be updated shortly for this release, for additional details about this release: https://docs.redhat.com/en/documentation/red_hat_advanced_cluster_management_for_kubernetes/2.11/html-single/release_notes/index#acm-release-notes

The multicluster engine for Kubernetes provides the foundational components that are necessary for the centralized management of multiple Kubernetes-based clusters across data centers, public clouds, and private clouds. You can use the engine to create new Red Hat OpenShift Container Platform clusters or to bring existing Kubernetes-based clusters under management by importing them. After the clusters are managed, you can use the APIs that are provided by the engine to distribute configuration based on placement policy.

OpenShift API for Data Protection (OADP) enables you to back up and restore application resources, persistent volume data, and internal container images to external backup storage. OADP enables both file system-based and snapshot-based backups for persistent volumes.

The Grafana plugin for Performance Co-Pilot includes datasources for scalable time series from pmseries and Redis, live PCP metrics and bpftrace scripts from pmdabpftrace, as well as several dashboards. Security Fix(es): * crypto/x509: Incorrect enforcement of email constraints in crypto/x509 (CVE-2026-27137) * crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application (CVE-2026-33810) * golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821) * mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header (CVE-2026-42504) * encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (CVE-2026-33818) * net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution (CVE-2026-56860) * net/http: golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service (CVE-2026-56853) * html/template: golang: Go html/template: Cross-Site Scripting via pathological input (CVE-2026-56858) * crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

A security update for the Go Toolset in Red Hat Enterprise Linux 8 addresses multiple vulnerabilities affecting various Go components including net/mail, cmd/go, html/template, net/http, and net packages. The issues include denial of service, cross-site scripting, arbitrary file overwrite, and integrity bypass. These vulnerabilities could lead to denial of service, security control bypass, and arbitrary file writes. Red Hat has rated this update as important and released patches for multiple architectures and variants of Red Hat Enterprise Linux 8.

CVE-2026-39825 is a medium severity vulnerability in the Go standard library's net/http/httputil ReverseProxy component. It involves inconsistent parsing of HTTP query parameters, where some parameters may be hidden from certain functions like Rewrite or Director but still forwarded by ReverseProxy. This leads to inconsistent interpretation of HTTP requests, classified as HTTP Request/Response Smuggling (CWE-444). No official patch or remediation guidance has been published, and no known exploits exist in the wild.

This update for go1.25-openssl fixes the following issues - Update to version go1.25.12 (bsc#1244485). - CVE-2025-61732: cmd/cgo: discrepancy between Go and C/C++ comment parsing allows for C code smuggling (bsc#1257692). - CVE-2025-68121: crypto/tls: Config.Clone copies automatically generated session ticket keys, session resumption does not account for the expiration of full certificate chain (bsc#1256818). - CVE-2026-25679: net/url: reject IPv6 literal not at start of host (bsc#1259264). - CVE-2026-27139: os: FileInfo can escape from a Root (bsc#1259268). - CVE-2026-27140: cmd/go: trust layer bypass when using cgo and SWIG (bsc#1261653). - CVE-2026-27142: html/template: URLs in meta content attribute actions are not escaped (bsc#1259265). - CVE-2026-27143: cmd/compile: possible memory corruption after bound check elimination (bsc#1261654). - CVE-2026-27144: cmd/compile: no-op interface conversion bypasses overlap checking (bsc#1261655). - CVE-2026-27145: crypto/x509: split candidate hostname only once (bsc#1267450). - CVE-2026-32280: crypto/x509: unexpected work during chain building (bsc#1261656). - CVE-2026-32281: crypto/x509: inefficient policy validation (bsc#1261657). - CVE-2026-32282: os: Root.Chmod can follow symlinks out of the root on Linux (bsc#1261658). - CVE-2026-32283: crypto/tls: multiple key update handshake messages can cause connection to deadlock (bsc#1261659). - CVE-2026-32288: archive/tar: unbounded allocation when parsing old format GNU sparse map (bsc#1261660). - CVE-2026-32289: html/template: JS template literal context incorrectly tracked (bsc#1261661). - CVE-2026-33811: net: crash when handling long CNAME response (bsc#1264508). - CVE-2026-33814: net/http: infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1264506). - CVE-2026-39817: cmd/go: "go tool pack" does not sanitize output paths (bsc#1264505). - CVE-2026-39819: cmd/go: "go bug" follows symlinks in predictable temporary filenames (bsc#1264504). - CVE-2026-39820: net/mail: quadratic string concatentation in consumeComment (bsc#1264503). - CVE-2026-39822: os: Root escape via symlink plus trailing slash (bsc#1271014). - CVE-2026-39823: html/template: bypass of meta content URL escaping causes XSS (bsc#1264509). - CVE-2026-39825: net/http/httputil: ReverseProxy forwards queries with more than urlmaxqueryparams parameters (bsc#1264500). - CVE-2026-39826: html/template: escaper bypass leads to XSS (bsc#1264507). - CVE-2026-39836: net: panic in Dial and LookupPort when handling NUL byte on Windows (bsc#1264501). - CVE-2026-42499: net/mail: quadratic string concatenation in consumePhrase (bsc#1264502). - CVE-2026-42501: cmd/go: malicious module proxy can bypass checksum database (bsc#1264499). - CVE-2026-42504: mime: quadratic complexity in WordDecoder.DecodeHeader (bsc#1267442). - CVE-2026-42505: crypto/tls: omit PSK in ECH outer client hello (bsc#1271015). - CVE-2026-42507: net/textproto: arbitrary input are included in errors without any escaping (bsc#1267444).