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CVE-2026-33811VulnerabilityPublished Updated

SUSE · Security update for go1.26

Affects SUSESource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-33811· High 7.5

Not known to be exploited · CVSS 7.5 High : upgrade SUSE net to 1.26.3 or 1.25.10 soon.

Data as of 10 Nov 2026, 20:06 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 1.26.3, 1.25.10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 net to 1.26.3 or 1.25.10.

Affected software

ProductAffectedFixed in
Go standard librarynetAffected
  • >=1.26.0-0 <1.26.3
Fixed in
  • 1.26.3
Go standard librarynetAffected
  • <1.25.10
Fixed in
  • 1.25.10
Gonetpkg:golang/netOther threatsAffected
  • =0
  • =1.26.0-0
Fixed in–
Gonetpkg:golang/netOther threatsAffected
  • <1.25.10
  • >=1.26.0-0 <1.26.3
Fixed in
  • 1.25.10
  • 1.26.3

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 Security issues: - CVE-2026-33811: net: crash when handling long CNAME response (bsc#1264508). - CVE-2026-33814: net/http: infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1264506). - CVE-2026-39817: cmd/go: "go tool pack" does not sanitize output paths (bsc#1264505). - CVE-2026-39819: cmd/go: "go bug" follows symlinks in predictable temporary filenames (bsc#1264504). - CVE-2026-39820: net/mail: quadratic string concatentation in consumeComment (bsc#1264503). - CVE-2026-39823: html/template: bypass of meta content URL escaping causes XSS (bsc#1264509). - CVE-2026-39825: net/http/httputil: ReverseProxy forwards queries with more than urlmaxqueryparams parameters (bsc#1264500). - CVE-2026-39826: html/template: escaper bypass leads to XSS (bsc#1264507). - CVE-2026-39836: net: panic in Dial and LookupPort when handling NUL byte on Windows (bsc#1264501). - CVE-2026-42499: net/mail: quadratic string concatenation in consumePhrase (bsc#1264502). - CVE-2026-42501: cmd/go: malicious module proxy can bypass checksum database (bsc#1264499). Non security issues: - Updated to go1.26.3 (bsc#1255111). - Go packages miss binutils-gold dependency (bsc#1170826).

References

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