PatchTheCVECVE-2026-69402: Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Share
CVE-2026-69402 is a high-severity flaw (CVSS 7.3) affecting sharepoint server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Why this priority
- High severity
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.3 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | Required |
| EPSS exploit chance | 0.4% (top 61%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2026-09-08 |
| Last modified | 2026-09-10 |
Last updated 2026-09-10 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-69402?
sharepoint server: upgrade to 16.0.20326.20090. Exact commands for each OS are on this page.
Is CVE-2026-69402 being exploited?
CVE-2026-69402 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-69402 affect?
CVE-2026-69402 affects sharepoint server. Severity is high (CVSS 7.3). Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
How urgent is CVE-2026-69402?
Priority 40/100. High severity; On your watchlist
Software pages
SharePoint vulnerabilities · Microsoft Office vulnerabilities
Related CVEs
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