Red Hat Security Advisory: go-toolset:rhel8 security update
Affects Red Hat go-toolset:rhel8Source GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 8.8 High : upgrade Red Hat go to 1.26.2 or 1.25.9 soon.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 51% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.26.2, 1.25.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 8 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade cmd/go to 1.26.2 or 1.25.9.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Go toolchaincmd/go | Affected
| Fixed in
|
| Go toolchaincmd/go | Affected
| Fixed in
|
Gocmd/gopkg:golang/cmd/goOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. Security Fix(es): * golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root (CVE-2026-32282) * crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283) * crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280) * golang: cmd/compile: no-op interface conversion bypasses overlap checking (CVE-2026-27144) * cmd/go: golang: Go (golang) and cmd/go: Arbitrary Code Execution via malicious SWIG file names (CVE-2026-27140) * golang: cmd/compile: possible memory corruption after bound check elimination (CVE-2026-27143) 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.
References
- access.redhat.com/errata/RHSA-2026:10704 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2456336 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2456338 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2456339 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2456340 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2456341 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2456342 (opens in a new tab)
- issues.redhat.com/browse/RHEL-169932 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_10704.json (opens in a new tab)