ESB-2026.3576
PUBLISHED
CVSS 8.600000381469727 HIGH
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AUSCERT External Security Bulletin Redistribution
ESB-2026.3576
go-toolset:rhel8 security update
14 April 2026
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AUSCERT Security Bulletin Summary
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Product: go-toolset:rhel8
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2026-25679 CVE-2025-61731
Original Bulletin:
https://access.redhat.com/errata/RHSA-2026:7878
Comment: CVSS (Max): 8.6 CVE-2025-61731 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H)
CVSS Source: Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS (Max): 0.0% (9th) CVE-2026-25679 2026-04-13
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RHSA-2026:7878 - Security Advisory
Issued: 2026-04-13
Updated: 2026-04-13
Synopsis
Go-toolset:rhel8 security update
Type/Severity
Security Advisory: Important
Topic
An update for the go-toolset:rhel8 module is now available for Red Hat
Enterprise Linux 8.2 Advanced Update Support.
Red Hat Product Security has rated this update as having a security impact of
Important. A Common Vulnerability Scoring System (CVSS) base score, which gives
a detailed severity rating, is available for each vulnerability from the CVE
link(s) in the References section.
Description
Go Toolset provides the Go programming language tools and libraries. Go is
alternatively known as golang.
Security Fix(es):
o cmd/go: cmd/go: Arbitrary file write via malicious pkg-config directive
(CVE-2025-61731)
o net/url: Incorrect parsing of IPv6 host literals in net/url
(CVE-2026-25679)
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.
Solution
For details on how to apply this update, which includes the changes described
in this advisory, refer to:
https://access.redhat.com/articles/11258
Affected Products
o Red Hat Enterprise Linux Server - AUS 8.2 x86_64
Fixes
o BZ - 2434433 - CVE-2025-61731 cmd/go: cmd/go: Arbitrary file write via
malicious pkg-config directive
o BZ - 2445356 - CVE-2026-25679 net/url: Incorrect parsing of IPv6 host
literals in net/url
CVEs
o CVE-2025-61731
o CVE-2026-25679
References
o https://access.redhat.com/security/updates/classification/#important
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