CVE-2026-66805
published 2026-08-11CVE-2026-66805: Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
PriorityP262high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
2.04%
81.0th percentile
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_sharepoint_server_subscription_edition | >= 16.0.0 < 16.0.20326.20190 | 16.0.20326.20190 |
| microsoft | sharepoint_server | < 16.0.19725.20522 | 16.0.19725.20522 |
| microsoft | sharepoint_server | — | — |
| microsoft | sharepoint_server | — | — |
| multicluster-engine | console-mce-rhel9 | — | — |
| rhacm2 | console-rhel9 | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vendor_redhat8.0HIGH
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VulDB
Console Logs document.write cross site scripting
vuldb·2026-08-11
CVE-2026-66805 [LOW] Console Logs document.write cross site scripting
A vulnerability categorized as problematic has been discovered in Console. Affected by this vulnerability is the function document.write of the component Logs. The manipulation results in cross site scripting.
This vulnerability was named CVE-2026-66805. The attack may be performed from remote. There is no available exploit.
GHSA
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
ghsa_unreviewed·2026-08-11
CVE-2026-66805 [HIGH] CWE-502 Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Red Hat
console: console: stored DOM XSS via unescaped pod logs in document.write
vendor_redhat·2026-08-10·CVSS 8.0
CVE-2026-66805 [HIGH] CWE-79 console: console: stored DOM XSS via unescaped pod logs in document.write
console: console: stored DOM XSS via unescaped pod logs in document.write
A flaw was found in the console component. An attacker who can write to container logs on a managed cluster can inject malicious code into the hub console user's browser session. This occurs when the user views raw pod logs, as the console does not properly escape the log content. Successful exploitation could lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the console user.
Statement: This is an Important flaw where an attacker with the ability to write to container logs on a managed cluster can inject malicious HTML/JavaScript. When a Red Hat Advanced Cluster Management for Kubernetes console user views these raw pod logs, the injected code executes in their browser ses
No detection rules found.
No public exploits indexed.
Rapid7
Patch Tuesday - August 2026
blogs_rapid7·2026-08-11·CVSS 7.2
CVE-2026-68821 [HIGH] Patch Tuesday - August 2026
Microsoft is publishing 421 vulnerabilities on August 2026 Patch Tuesday , including 236 vulnerabilities in Windows. This is lower volume than last month’s record-breaking behemoth, but still one of the largest Patch Tuesday totals ever. There is no reason to suppose that Patch Tuesday will ever return to the lower volumes we saw prior to 2026. Microsoft is aware of exploitation in the wild for one of the vulnerabilities published today, as well as public disclosure for two others, although the Notable CVEs section of the Security Update Guide omits one of these. As usual, browser vulns are not included in the Patch Tuesday count above, but unusually, Microsoft does not appear to have published any desktop browser security patches so far this month.
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Tenable
Microsoft's August 2026 Patch Tuesday Addresses 398 CVEs (CVE-2026-68820)
blogs_tenable·2026-08-11·CVSS 7.0
CVE-2026-68820 [HIGH] Microsoft's August 2026 Patch Tuesday Addresses 398 CVEs (CVE-2026-68820)
## Microsoft's August 2026 Patch Tuesday Addresses 398 CVEs (CVE-2026-68820)
42 Critical
355 Important
1 Moderate
0 Low
Microsoft addresses 398 CVEs in the eighth Patch Tuesday of 2026, with three zero-days, including one that was exploited in the wild.
Microsoft patched 398 CVEs in its August 2026 Patch Tuesday release, with 42 rated critical, 355 rated as important and one rated as moderate. Our counts omitted two CVEs assigned by MITRE; CVE-2026-6726 and CVE-2026-6727.
This month’s update includes patches for:
.NET
.NET Core
.NET Framework
AMD Zen
Active Directory Certificate Services (AD CS)
Application Information Services
Azure Active Directory
Azure CycleCloud
Azure Monitor Agent
Azure Storage Explorer
Capability Access Management Service (camsvc)
Desktop Window M
Sans Isc
Microsoft Patch Tuesday August 2026, (Tue, Aug 11th)
blogs_sans_isc·2026-08-11·CVSS 7.8
CVE-2026-68820 [HIGH] Microsoft Patch Tuesday August 2026, (Tue, Aug 11th)
Microsoft Patch Tuesday August 2026
Published: 2026-08-11. Last Updated: 2026-08-11 17:54:49 UTC
by Renato Marinho (Version: 1)
0 comment(s)
This month we got patches for 418 vulnerabilities. Of these, 62 are critical, 1 is being exploited in the wild, and 2 were publicly disclosed as zero-days. Notable fixes include Windows privilege escalation, container tampering, and critical QUIC and DNS Server remote code execution bugs.
A few vulnerabilities worth mentioning:
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability (CVE-2026-68820)
This Important-severity elevation of privilege vulnerability is listed by Microsoft as exploited in the wild but not publicly disclosed, and it has a CVSS score of 7.0. The flaw is a use-after-free issue in the Windows Ancil
Bugzilla
CVE-2026-66805 console: console: stored DOM XSS via unescaped pod logs in document.write
bugzilla·2026-07-29
CVE-2026-66805 [HIGH] CVE-2026-66805 console: console: stored DOM XSS via unescaped pod logs in document.write
CVE-2026-66805 console: console: stored DOM XSS via unescaped pod logs in document.write
The openRawTab function in LogsPage.tsx opens a new browser window and calls document.write(`${logs}`) with raw container stdout/stderr from a managed (spoke) cluster, fetched via the search/managed-cluster proxy. No HTML encoding is applied before document.write.
An attacker who can write to container logs on a spoke cluster (e.g. by controlling a pod's stdout) can inject arbitrary HTML/JavaScript that executes in the hub console user's browser session when they click "Raw" on the pod logs page. This enables session hijacking, credential theft, or actions on behalf of the console user.
Affected file: frontend/src/routes/Home/Search/Details/LogsPage.tsx (lines 108-111)
Fix branch: glasswing/f002
En
2026-08-11
Published