VulnSocial

CVE-2026-66318General(microsoft / edge_chromium)

LOWCVSS 8.1 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.

microsoft CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-346

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • edge_chromium

Threat summary

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 1 signal
  • General: 2 classified signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 2 mentions (2026-08-04); latest day: 1
  • 3 total mentions across 2 days

Affected systems

Vendors
microsoft
Products
edge_chromium

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-08-04: 2Mentions · 2026-08-06: 1Technical Details · 2026-08-04: 108-0408-06
Signal classification2 categories
General
266.7%
Disclosure
133.3%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-08-042
Disclosure1General1
2026-08-061
General1
Full discourse3 posts
  • kawn@kawn2020
    General

    #microsoftupdate #securityupdate #Edge Microsoft Edge for Stable (Version 151.0.4129.59) つづき ・CVE-2026-66314 ・CVE-2026-66315 ・CVE-2026-66316 ・CVE-2026-66317 ・CVE-2026-66318 ・CVE-2026-66321 ・CVE-2026-66322 ・CVE-2026-66325 ・CVE-2026-66326

    Post summary

    The tweet simply lists a series of CVE identifiers within a Microsoft Edge update announcement, lacking any further detail or actionable information.

    0000056
    92 followersView on X
  • CERT-PY@CERTpy
    General

    ⚠️ Vulnerabilidades en productos Microsoft ❗ CVE-2026-66318 ❗ CVE-2026-62870 ➡️ Más info: https://www.cert.gov.py/vulnerabilidades-en-productos-microsoft-10/ https://t.co/Nl06BHsVjS

    Post summary

    The post lists two Microsoft CVEs (CVE-2026-66318 and CVE-2026-62870) and directs readers to a URL for additional details, but it provides no further technical specifics, exploits, or mitigation information.

    00000243
    6.7K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-66318 Origin Validation Error in Microsoft Edge Chromium-Based Information Disclosure https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-66318

    Post summary

    The post announces a new Microsoft Edge information disclosure vulnerability (CVE-2026-66318) with minimal detail and no evidence of PoC, exploit code, or active exploitation.

    00000103
    4.1K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appmicrosoftedge_chromium---

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