Red Hat Security Advisory: go-toolset:rhel8 security update
Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. Security Fix(es): * cmd/go: cmd/go: Arbitrary file write via malicious pkg-config directive (CVE-2025-61731) * 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.
AI Analysis
Technical Summary
The go-toolset in Red Hat Enterprise Linux 8 includes fixes for two vulnerabilities. CVE-2025-61731 is an arbitrary file write vulnerability in cmd/go triggered by a malicious pkg-config directive. CVE-2026-25679 concerns incorrect parsing of IPv6 host literals in the net/url package. These vulnerabilities could potentially lead to unauthorized file writes or incorrect URL parsing behavior. Red Hat has released updated go-toolset packages to address these issues as detailed in advisory RHSA-2026:6949.
Potential Impact
The arbitrary file write vulnerability (CVE-2025-61731) could allow an attacker to write files arbitrarily via a crafted pkg-config directive, potentially leading to code execution or system compromise if exploited. The incorrect IPv6 parsing (CVE-2026-25679) may cause improper handling of network addresses, which could affect applications relying on net/url for URL parsing, possibly leading to security or stability issues. Red Hat rates the overall security impact as Important (high). There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated go-toolset packages for Red Hat Enterprise Linux 8 that fix these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:6949 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor advisory.
Red Hat Security Advisory: go-toolset:rhel8 security update
Description
Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. Security Fix(es): * cmd/go: cmd/go: Arbitrary file write via malicious pkg-config directive (CVE-2025-61731) * 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.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The go-toolset in Red Hat Enterprise Linux 8 includes fixes for two vulnerabilities. CVE-2025-61731 is an arbitrary file write vulnerability in cmd/go triggered by a malicious pkg-config directive. CVE-2026-25679 concerns incorrect parsing of IPv6 host literals in the net/url package. These vulnerabilities could potentially lead to unauthorized file writes or incorrect URL parsing behavior. Red Hat has released updated go-toolset packages to address these issues as detailed in advisory RHSA-2026:6949.
Potential Impact
The arbitrary file write vulnerability (CVE-2025-61731) could allow an attacker to write files arbitrarily via a crafted pkg-config directive, potentially leading to code execution or system compromise if exploited. The incorrect IPv6 parsing (CVE-2026-25679) may cause improper handling of network addresses, which could affect applications relying on net/url for URL parsing, possibly leading to security or stability issues. Red Hat rates the overall security impact as Important (high). There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated go-toolset packages for Red Hat Enterprise Linux 8 that fix these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:6949 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:6949
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-25679"]
- Cvss Version
- null
Threat ID: 6a16097fe29bf47b5064bafe
Added to database: 05/26/2026, 20:58:39 UTC
Last enriched: 07/30/2026, 09:56:12 UTC
Last updated: 07/31/2026, 19:22:56 UTC
Views: 129
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