Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message
    buffer. (CVE-2026-46600)

The version of Golang running on the remote host is 1.25.x prior to 1.25.13, or 1.26.x prior to 1.26.6. It is, therefore, affected by multiple vulnerabilities in the standard library and the toolchain, as referenced in the golang-announce advisory.

  - The ToASCII and ToUnicode functions incorrectly accepted Punycode-encoded labels that decode to an     ASCII-only label. This can lead to privilege escalation in programs using the idna package.
    (CVE-2026-39821)

  - Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the     message buffer in golang.org/x/net/dns/dnsmessage. (CVE-2026-46600)

  - When a server is configured to support unencrypted HTTP/2, it reads bytes from each new connection     to check for the HTTP/2 client preface. Previously this was done with no timeout. ReadHeaderTimeout     is now applied for this check. (CVE-2026-56853)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3480-1 advisory.

    - Security update correcting a CVE over-claim from the previous       update, verified by auditing the fix code actually present in the       vendored tree:

      * CVE-2026-39821 (bsc#1266575): the previous entry claimed this         fixed by the golang.org/x/net v0.55.0 re-vendor, but 0.55.0's         idna fix is compile-time gated on Unicode 16 tables, which only         exist for go1.27+ - it is inert in our go1.25 builds, so the         claim was incorrect. Re-vendor golang.org/x/net v0.55.0 ->         v0.57.0, whose idna package rejects all-ASCII Punycode labels         unconditionally; the CVE is now actually fixed.

    - Re-vendor golang.org/x/text v0.37.0 -> v0.40.0: CVE-2026-56852       (bsc#1271661), infinite loop on invalid input in unicode/norm.

    - golang.org/x/crypto v0.52.0 -> v0.54.0 (pulled in by x/net 0.57.0;
      no additional CVE claims, all previously listed x/crypto fixes       remain included).

    - CVE-2026-13201 (bsc#1269093), safepath resolves a path whose last       component is a symlink without detecting it, allowing metadata       operations via /proc/self/fd to act on the symlink target.
      Backports of upstream release-1.7 commits 9ecda4ad5e and       1494cee849.
    - x/net 0.57.0 also contains the fix for CVE-2026-46600       (bsc#1272415) in dns/dnsmessage; kubevirt does not vendor that       package (not affected), the bump merely rides past it.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message     buffer. (CVE-2026-46600)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
445962	Golang: stdlib: security update to 1.26.6stdlib: security update to 1.27.0-rc.3	Tenable Cloud Security	Golang	Local	high
445962	Golang: stdlib: security update to 1.26.6stdlib: security update to 1.27.0-rc.3	Tenable Self-Hosted Container Security	Golang	Local	high
335411	Golang 1.25.x < 1.25.13 / 1.26.x < 1.26.6 Multiple Vulnerabilities	Nessus	Misc.	Local	critical
332133	SUSE SLES15 Security Update : kubevirt (SUSE-SU-2026:3480-1)	Nessus	SuSE Local Security Checks	Local	high
329562	Linux Distros Unpatched Vulnerability : CVE-2026-46600	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-46600

high

Tenable Plugins

high

high

critical

high

high