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ALSA-2026:29980 — Moderate: golang security, bug fix, and enhancement update

Affected: AlmaLinux:10: go-toolset, AlmaLinux:10: golang, AlmaLinux:10: golang-bin, AlmaLinux:10: golang-docs, AlmaLinux:10: golang-misc, AlmaLinux:10: golang-race, AlmaLinux:10: golang-src, AlmaLinux:10: golang-tests

The golang packages provide the Go programming language compiler.

Security Fix(es):

* net/textproto: golang: Golang net/textproto: Misleading error messages via input injection (CVE-2026-42507)

Bug Fix(es) and Enhancement(s):

* Update Go to version 1.26.4+1 [almalinux-10.2.z] (JIRA:AlmaLinux-183347)

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:2026-09277

BELL-CVE-2026-42507

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-2026-42507 — Arbitrary inputs are included in errors without any escaping in net/textproto

Affected: Bitnami: golang

When returning errors, functions in the net/textproto package would include its input as part of the error. This might allow an attacker to inject misleading content to errors that are printed or logged.

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Withdrawn: CLEANSTART-2026-AG91746 — Security fixes for CVE-2026-25680, CVE-2026-25681, CVE-2026-26958, CVE-2026-27145, CVE-2026-29181, CVE-2026-32952, CVE-…

Withdrawn by the publisher.

Affected: CleanStart: dex

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

EUVD-2026-324478

fkie_cve-2026-42507

GHSA-h3gm-q7m7-mp28

msrc_CVE-2026-42507 — Arbitrary inputs are included in errors without any escaping in net/textproto

msrc_CVE-2026-42507

OESA-2026-3879 — git-lfs security update

Affected: openEuler:24.03-LTS-SP1: git-lfs

Git Large File Storage (LFS) replaces large files such as audio samples, videos, datasets, and graphics with text pointers inside Git, while storing the file contents on a remote server. Security Fix(es):

The filepath.Walk and filepath.WalkDir functions are documented as not following symbolic links, but both functions are susceptible to a TOCTOU (time of check/time of use) race condition where a portion of the path being walked is replaced with a symbolic link while the walk is in progress.(CVE-2024-8244)

Gitk is a Tcl/Tk based Git history browser. Starting with 1.7.0, when a user clones an untrusted repository and runs gitk without additional command arguments, files for which the user has write permission can be created and truncated. The option Support per-file encoding must have been enabled before in Gitk's Preferences. This option is disabled by default. The same happens when Show origin of this line is used in the main window (regardless of whether Support per-file encoding is enabled or not). This vulnerability is fixed in 2.43.7, 2.44.4, 2.45.4, 2.46.4, 2.47.3, 2.48.2, 2.49.1, and 2.50.1.(CVE-2025-27613)

Proxy-Authorization and Proxy-Authenticate headers persisted on cross-origin redirects potentially leaking sensitive information.(CVE-2025-4673)

If the PATH environment variable contains paths which are executables (rather than just directories), passing certain strings to LookPath ("", ".", and ".."), can result in the bin…

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-2026:29980 — Moderate: golang security, bug fix, and enhancement update

Affected: Rocky Linux:10: golang

The golang packages provide the Go programming language compiler.

Security Fix(es):

* net/textproto: golang: Golang net/textproto: Misleading error messages via input injection (CVE-2026-42507)

Bug Fix(es) and Enhancement(s):

* Update Go to version 1.26.4+1 [rhel-10.2.z] (JIRA:Rocky Linux-183347)

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-2026-42507

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

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.