Threats Tagged 'cve-2026-42561'

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.

The fence-agents packages provide a collection of scripts for handling remote power management for cluster devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster. Security Fix(es): * urllib3: urllib3 Streaming API improperly handles highly compressed data (CVE-2025-66471) * urllib3: urllib3 vulnerable to decompression-bomb safeguard bypass when following HTTP redirects (streaming API) (CVE-2026-21441) 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.

### Summary A denial of service vulnerability exists when parsing crafted `multipart/form-data` requests with large preamble or epilogue sections. ### Details Two inefficient multipart parsing paths could be abused with attacker-controlled input. Before the first multipart boundary, the parser handled leading CR and LF bytes inefficiently while searching for the start of the first part. After the closing boundary, the parser continued processing trailing epilogue data instead of discarding it immediately. As a result, parsing time could grow with the size of crafted data placed before the first boundary or after the closing boundary. ### Impact An attacker can send oversized malformed multipart bodies that consume excessive CPU time during request parsing, reducing request-handling capacity and delaying legitimate requests. This issue degrades availability but does not typically result in a complete denial of service for the entire application. ### Mitigation Upgrade to version `0.0.26` or later, which skips ahead to the next boundary candidate when processing leading CR/LF data and immediately discards epilogue data after the closing boundary.

Migration Toolkit for Applications (MTA) accelerates large-scale application modernization efforts across hybrid cloud environments on Red Hat OpenShift. This solution provides insight throughout the adoption process, at both the portfolio and application levels: inventory, assess, analyze, and manage applications for faster migration to OpenShift via the user interface.

Red Hat Ansible Automation Platform provides an enterprise framework for building, deploying and managing IT automation at scale. IT Managers can provide top-down guidelines on how automation is applied to individual teams, while automation developers retain the freedom to write tasks that leverage existing knowledge without the overhead. Ansible Automation Platform makes it possible for users across an organization to share, vet, and manage automation content by means of a simple, powerful, and agentless language. For details about this release, refer to the release notes listed in the References section.

This adds the satellite/iop-advisor-engine-rhel9 image to the Red Hat container registry. To pull this container image, run the following command: podman pull registry.redhat.io/satellite/iop-advisor-engine-rhel9

A denial of service vulnerability exists in the python-multipart library used for parsing multipart/form-data requests. The flaw allows an attacker to cause excessive CPU usage by sending requests with many repeated headers without termination or a single very large header value. This affects ASGI applications using frameworks like Starlette or FastAPI that rely on python-multipart. The issue is mitigated by upgrading to python-multipart version 0.0.27 or later. If immediate upgrade is not possible, limiting request body size at the server or proxy can reduce exposure but does not fully resolve the vulnerability.

Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.27, python-multipart has a denial of service vulnerability in multipart part header parsing. When parsing multipart/form-data, MultipartParser previously had no limit on the number of part headers or the size of an individual part header. An attacker could send a request with either many repeated headers without terminating the header block or a single very large header value, causing excessive CPU work before request rejection or completion. This vulnerability is fixed in 0.0.27.

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fix(es): * urllib3: urllib3 Streaming API improperly handles highly compressed data (CVE-2025-66471) 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.