Red Hat Security Advisory: golang security update

Fixed packages 8

Vulnerabilities 4

• Critical 9.1
  CVE-2025-68121

  Unexpected session resumption in crypto/tls

  During session resumption in crypto/tls, if the underlying Config has its ClientCAs or RootCAs fields mutated between the initial handshake and the resumed handshake, the resumed handshake may succeed when it should have failed. This may happen when a user ca…

  Go standard library crypto/tls langfuse-3-worker katib-suggestion-hyperopt Debian Ubuntu Azure Linux Alpine Wolfi Go
  Feb 5, 2026
• High 8.6
  CVE-2025-61732

  Potential code smuggling via doc comments in cmd/cgo

  A discrepancy between how Go and C/C++ comments were parsed allowed for code smuggling into the resulting cgo binary.

  Go toolchain cmd/cgo langfuse-3-worker katib-suggestion-hyperopt Debian Ubuntu Azure Linux Alpine Wolfi Go
  Feb 5, 2026
• High 7.5
  CVE-2025-61726

  Memory exhaustion in query parameter parsing in net/url

  The net/url package does not set a limit on the number of query parameters in a query. While the maximum size of query parameters in URLs is generally limited by the maximum request header size, the net/http.Request.ParseForm method can parse large URL-encode…

  Go standard library net/url katib-suggestion-hyperopt katib-earlystopping Debian Ubuntu Azure Linux Alpine Wolfi Go
  Jan 28, 2026
• Medium 6.5
  CVE-2025-61728

  Excessive CPU consumption when building archive index in archive/zip

  archive/zip uses a super-linear file name indexing algorithm that is invoked the first time a file in an archive is opened. This can lead to a denial of service when consuming a maliciously constructed ZIP archive.

  Go standard library archive/zip katib-suggestion-hyperopt katib-earlystopping Debian Ubuntu Azure Linux Alpine Wolfi Go
  Jan 28, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2434431
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2434432
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2437016
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2437111
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_3192.json
• report
  https://access.redhat.com/security/cve/CVE-2025-61726
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-61726
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-61726
• article
  https://go.dev/cl/736712
• article
  https://go.dev/issue/77101
• article
  https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc
• advisory
  https://pkg.go.dev/vuln/GO-2026-4341
• report
  https://access.redhat.com/security/cve/CVE-2025-61728
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-61728
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-61728
• article
  https://go.dev/cl/736713
• article
  https://go.dev/issue/77102
• advisory
  https://pkg.go.dev/vuln/GO-2026-4342
• report
  https://access.redhat.com/security/cve/CVE-2025-61732
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-61732
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-61732
• article
  https://go.dev/cl/734220
• article
  https://go.dev/issue/76697
• article
  https://groups.google.com/g/golang-announce/c/K09ubi9FQFk
• advisory
  https://pkg.go.dev/vuln/GO-2026-4433
• report
  https://access.redhat.com/security/cve/CVE-2025-68121
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-68121
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-68121
• article
  https://go.dev/cl/737700
• article
  https://go.dev/issue/77217
• advisory
  https://pkg.go.dev/vuln/GO-2026-4337