SUSE · Security update for go1.26
Affects SUSESource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 6.5 Medium : upgrade SUSE x509 to 1.26.4 or 1.25.11 when convenient.
Data as of 10 Nov 2026, 20:06 UTC
- Patch
- Available – fixed in 1.26.4, 1.25.11
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:HExploitation evidence
Disclosed: evidence found.
CVE published 2 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 10 Nov 2026.
What to do
Upgrade crypto/x509 to 1.26.4 or 1.25.11.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Go standard librarycrypto/x509 | Affected
| Fixed in
|
| Go standard librarycrypto/x509 | Affected
| Fixed in
|
Gocrypto/x509pkg:golang/crypto/x509Other 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
This update for go1.26 fixes the following issues Update to go1.26.4 (bsc#1255111): - CVE-2026-27145: crypto/x509: split candidate hostname only once (bsc#1267450). - CVE-2026-42504: mime: quadratic complexity in WordDecoder.DecodeHeader (bsc#1267442). - CVE-2026-42507: net/textproto: arbitrary input are included in errors without any escaping (bsc#1267444). Changes: * go#79230 go#79217 boo#1267442 security: fix CVE-2026-42504 mime: quadratic complexity in WordDecoder.DecodeHeader * go#79426 go#79346 boo#1267444 security: fix CVE-2026-42507 net/textproto: arbitrary input are included in errors without any escaping * go#79701 go#79694 boo#1267450 security: fix CVE-2026-27145 crypto/x509: split candidate hostname only once * go#79191 cmd/compile: Bug in rewrite rules for AMD64 causes SHL instruction overflow and miscompilation * go#79226 crypto/internal/fips140/drbg: backport CL 774221 to Go 1.26 * go#79349 cmd/fix: x/tools/go/analysis/passes/modernize: slicescontains hoists needle expression, changing side effect count * go#79686 runtime/race: change in 93a4f03 leads to a failed build on Amazon Linux 2 and arm64
References
- suse.com/support/security/rating/ (opens in a new tab)
- ftp.suse.com/pub/projects/security/csaf/2026/opensuse-su-2026_20976-1.json (opens in a new tab)
- bugzilla.suse.com/1245878 (opens in a new tab)
- bugzilla.suse.com/1255111 (opens in a new tab)
- bugzilla.suse.com/1264395 (opens in a new tab)
- bugzilla.suse.com/1267442 (opens in a new tab)
- bugzilla.suse.com/1267444 (opens in a new tab)
- bugzilla.suse.com/1267450 (opens in a new tab)
- suse.com/security/cve/CVE-2026-27145/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-42504/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-42507/ (opens in a new tab)