# CVE-2026-80095

Authenticated XSS in Microsoft SharePoint enabling privilege escalation.

- Page: https://www.vulneraibility.com/cve/CVE-2026-80095
- CVSS: 9.0
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.81% (percentile 57.3)
- CISA SSVC: exploitation none, automatable no, technical impact total (assessed 2026-11-11)
- Weakness: CWE-79
- Published: 2026-11-10

## Affected versions

- Microsoft Microsoft SharePoint Server Subscription Edition: affected >= 16.0.0 and < 16.0.20326.20278

A version outside these ranges is not a statement that it is unaffected.

## Impact

Authenticated XSS lets attacker-run scripts in victims' browsers to hijack sessions, perform actions as users, and elevate privileges across SharePoint.

## Action

Immediate action required

## Recommendation

Install Microsoft's security update immediately; restrict access and monitor SharePoint logs.

## References

- [patch] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80095

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.