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ALSA-2026:62631 — Important: golang-github-openprinting-ipp-usb security update

Affected: AlmaLinux:10: ipp-usb

HTTP reverse proxy, backed by IPP-over-USB connection to device. It enables driverless support for USB devices capable of using IPP-over-USB protocol.

Security Fix(es):

* 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:](http:) golang: Go net/[http:](http:) Unencrypted HTTP/2 connections vulnerable to Denial of Service (CVE-2026-56853) * crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862) * encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue (CVE-2026-56859)

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.

bdu:2026-09276

BELL-CVE-2026-42504

Affected: Alpaquita:23: go, Alpaquita:25: go, Alpaquita:stream: go, BellSoft Hardened Containers:23: go, BellSoft Hardened Containers:25: go, BellSoft Hardened Containers:stream: go

BIT-golang-2026-42504 — Quadratic complexity in WordDecoder.DecodeHeader in mime

Affected: Bitnami: golang

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.

certfr-2026-avi-0701 — De multiples vulnérabilités ont été découvertes dans les produits Microsoft. Elles permettent à un attaquant de provoqu…

certfr-2026-avi-0701

Withdrawn: CLEANSTART-2026-AC51978 — Security fixes for CVE-2026-39822, CVE-2026-42504, CVE-2026-42505 applied in versions: 0.15.4-r3, 0.15.4-r4

Withdrawn by the publisher.

Affected: CleanStart: haproxy-ingress

Multiple security vulnerabilities affect the haproxy-ingress package. These issues are resolved in later releases. See references for individual vulnerability details.

EUVD-2026-380923

fkie_cve-2026-42504

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.

GHSA-h524-452v-82p9

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.

msrc_CVE-2026-42504 — Quadratic complexity in WordDecoder.DecodeHeader in mime

msrc_CVE-2026-42504

openSUSE-SU-2026:10959-1 — go1.25-1.25.11-1.1 on GA media

go1.25-1.25.11-1.1 on GA media

RHSA-2026:23262 — Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME net/http/internal/http2: golang: golang.org/x/net: Go HTTP/2: Denial of Service via malformed SETTINGS_MAX_FRAME_SIZE frame net/mail: golang: Go net/mail: Denial of Service via crafted email inputs golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing html/template: golang: Go html/template: Cross-Site Scripting via improper URL escaping in meta tag content net/http/httputil: golang: net/http/httputil: ReverseProxy forwards hidden query parameters, potentially bypassing security controls html/template: golang: html/template: Cross-site scripting due to incorrect script tag escaping net: golang: Go net package: Denial of Service via NUL byte in Dial and LookupPort on Windows cmd/go: golang: Go command (cmd/go): Integrity bypass due to checksum validation flaw via malicious module proxy mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header net/textproto: golang: Golang net/textproto: Misleading error messages via input injection golang.org/x/crypto/ssh/knownhosts: golang: golang.org/x/crypto/ssh/knownhosts: Revocation bypass via unchecked SignatureKey golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Authorization bypass due to skipped source-address validation

RLSA-2026:62577 — Important: go-fdo-client security update

Affected: Rocky Linux:10: go-fdo-client

go-fdo-client is the device-side implementation of FIDO Device Onboard specification in Go. It provides an FDO client that interacts with FDO manufacturer and owner servers to perform device on-boarding.

Security Fix(es):

* crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application (CVE-2026-33810)

* 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)

* 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.

SUSE-SU-2026:22154-1 — Security update for go1.26

Security update for go1.26

UBUNTU-CVE-2026-42504

Affected: Ubuntu:22.04:LTS: golang-1.24, Ubuntu:24.04:LTS: golang-1.24, Ubuntu:25.10: golang-1.24, Ubuntu:25.10: golang-1.25, Ubuntu:26.04:LTS: golang-1.24, Ubuntu:26.04:LTS: golang-1.25, Ubuntu:26.04:LTS: golang-1.26

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.

VDE-2026-088 — METTLER TOLEDO: LabX Standard and Enterprise Report on External Component Analysis - v21.4

The vulnerabilities found in LabX Standard versions 21.3.22 - 21.4.23 are CVE-2025-69419, CVE-2026-0915, CVE-2025-15467, CVE-2026-4800, CVE-2026-33186, CVE-2026-39821, CVE-2026-33671 and are fixed in LabX Standard v21.4.25.

The vulnerabilities found in LabX Enterprise versions 21.3.22 - 21.4.23 are CVE-2026-4800, CVE-2026-33186, CVE-2026-39821, CVE-2026-33671 and are fixed in LabX Enterprise v21.4.25

All other vulnerabilities are to be fixed in the upcoming releases.

WID-SEC-W-2026-1776 — Golang Go: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Golang Go ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen, um einen Denial of Service durchzuführen, und um falsche Informationen darzustellen.