Red Hat Security Advisory: golang security update
The golang packages provide the Go programming language compiler. Security Fix(es): * crypto/x509: Incorrect enforcement of email constraints in crypto/x509 (CVE-2026-27137) * 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
This advisory covers two security fixes in the golang packages provided by Red Hat Enterprise Linux 9. The first vulnerability (CVE-2026-27137) involves incorrect enforcement of email constraints in the crypto/x509 package, potentially affecting certificate validation. The second vulnerability (CVE-2026-25679) concerns incorrect parsing of IPv6 host literals in the net/url package, which may lead to improper URL parsing. Red Hat has released updated golang packages (version 1.26.2-1.el9_8) that address these issues. The advisory references additional CVEs and provides links for applying the update. No CVSS scores are provided in the advisory, but the impact is rated as Important.
Potential Impact
The vulnerabilities could lead to incorrect behavior in cryptographic certificate validation and URL parsing within applications using the affected golang packages. This may result in security policy bypass or incorrect handling of network addresses. The advisory does not report known exploits in the wild. The impact is rated as Important by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released updated golang packages (version 1.26.2-1.el9_8) that fix the reported vulnerabilities. Users of affected Red Hat Enterprise Linux 9 systems should apply the provided updates promptly following Red Hat's official guidance at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official update.
Red Hat Security Advisory: golang security update
Description
The golang packages provide the Go programming language compiler. Security Fix(es): * crypto/x509: Incorrect enforcement of email constraints in crypto/x509 (CVE-2026-27137) * 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
This advisory covers two security fixes in the golang packages provided by Red Hat Enterprise Linux 9. The first vulnerability (CVE-2026-27137) involves incorrect enforcement of email constraints in the crypto/x509 package, potentially affecting certificate validation. The second vulnerability (CVE-2026-25679) concerns incorrect parsing of IPv6 host literals in the net/url package, which may lead to improper URL parsing. Red Hat has released updated golang packages (version 1.26.2-1.el9_8) that address these issues. The advisory references additional CVEs and provides links for applying the update. No CVSS scores are provided in the advisory, but the impact is rated as Important.
Potential Impact
The vulnerabilities could lead to incorrect behavior in cryptographic certificate validation and URL parsing within applications using the affected golang packages. This may result in security policy bypass or incorrect handling of network addresses. The advisory does not report known exploits in the wild. The impact is rated as Important by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released updated golang packages (version 1.26.2-1.el9_8) that fix the reported vulnerabilities. Users of affected Red Hat Enterprise Linux 9 systems should apply the provided updates promptly following Red Hat's official guidance at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:19181
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-27137"]
- State
- PUBLISHED
Threat ID: 6a16097fe29bf47b5064bc7c
Added to database: 05/26/2026, 20:58:39 UTC
Last enriched: 08/15/2026, 00:07:37 UTC
Last updated: 09/12/2026, 10:01:30 UTC
Views: 131
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