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Vulnerabilities/CVE-2026-78661Public Intelligence Dossier
Source: Microsoft · Limited verification•Last verified: •Collection Degraded
CVE-2026-78661Unknown / EvaluatingModerate (raw)CVSS 7.5

Avoid quadratic complexity when coalescing text nodes in html in golang.org/x/net

Published: 31 Oct 2026•Last updated: 04 Nov 2026, 07:17 AM IST•Source identifier: Unknown
Dossier completeness: source-provided sections 3 / 3 · rule guidance available. Missing source facts count as incomplete.
Official source
CISA KEV catalog
Unknown
KEV status was not determined.
CVSS score
7.5Moderate (raw)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U
Metric sourceMicrosoft MSRC CVRF
EPSS probability
0.2%0.002
Percentile8th
Weakness type
—
No further CWE recorded
Remediation
Patch status unknown
No fixed version or KB recorded

Why It Matters

Analysis dossier

Why It Matters

— No impact summary recorded

SOC priority

High

Actively exploited (source statement)

Unknown

Publicly disclosed

Unknown

Risk basis: Source severity; no confirmed exploitation signal

Affected Products & Remediation

15 source-backed products
Affected products and versions (source)
  • azl3 cert-manager 1.12.15-15 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 cf-cli 8.7.11-10 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 cloud-provider-kubevirt 0.5.1-10 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 cri-tools 1.32.0-10 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 docker-buildx 0.14.0-19 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 docker-compose 2.27.0-16 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 gh 2.102.0-2 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 influxdb 2.7.5-22 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 kube-vip-cloud-provider 0.0.10-11 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 kubevirt 1.8.4-4 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 packer 1.9.5-23 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 sriov-network-device-plugin 3.7.0-9 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 telegraf 1.31.0-35 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 application-gateway-kubernetes-ingress 1.7.7-6 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
  • azl3 dasel 2.8.1-5 on Azure Linux 3.0 · version range not provided by source · Microsoft MSRC · Source
Recorded patch / KBNot provided by source

Vendor or catalog guidance (source)

  • Microsoft MSRC: Release Notes

Known exploitation (source facts)

Only what a source states. Unknown means no source has said either way; it is not "not exploited".

CISA KEV
Unknown
Exploited (source statement)
Unknown
Publicly disclosed (source)
Unknown

Suggested hunting (rule-based inference)

SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.

Matched network-unauthenticated (CVSS AV:N, CVSS PR:N, CVSS UI:N)

Exposure

  1. Identify devices reporting this CVE and note which expose the affected service to untrusted networks.Telemetry: DeviceTvmSoftwareVulnerabilities · A network-reachable, no-privilege vector makes internet-facing instances the first exposure question. · Rule network-unauthenticated

Exploitation evidence

  1. Review inbound connections to the affected service from unexpected sources since the advisory date.Telemetry: DeviceNetworkEvents · Hunting hypothesis from the CVSS vector; it does not show that exploitation occurred. · Rule network-unauthenticated

Response

  1. Confirm the source-stated update is installed and the CVE is no longer reported.Telemetry: DeviceTvmSoftwareVulnerabilities · A follow-up inventory check verifies remediation. · Rule network-unauthenticated

CISA KEV Record

CISA KEV status was not determined for this record.

Change History & Source Data

— No recorded material change

CNA / source
Unknown
Record status · verification
UPDATED · Unknown
CPE
Unknown

Evidence & Provenance

1 public source
api.msrc.microsoft.comSource record
Detection Hunting Query

— No published hunting query names this record. Browse community and library queries instead.

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Correlated briefings

SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.