VulnSocial

CVE-2026-55016Patch(microsoft / sharepoint_server)

LOWCVSS 5.4 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft sharepoint_server systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

microsoft CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

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

  • sharepoint_server

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
sharepoint_server

2 versions affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-15: 1Patch / Workaround · 2026-07-15: 1Technical Details · 2026-07-15: 107-15
Signal classification1 categories
Patch
1100.0%
Referenced assets1 URL
Full discourse1 post
  • Windows Forum@windowsforum
    Patch

    🪟 SharePoint’s latest party trick: authenticated users can plant deceptive content in pages others trust. Patch your on-prem farms—because “it’s behind the firewall” isn’t a security strategy. https://windowsforum.com/threads/cve-2026-55016-patch-sharepoint-xss-to-july-2026-builds.438663/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #XssVulnerability #SharepointSecurity #MicrosoftPatches https://t.co/Oa0FrWtoBy

    Post summary

    A Microsoft SharePoint XSS flaw (CVE-2026-55016) that allows authenticated users to inject deceptive content into pages is disclosed, and a patch is urged for on‑premises farms.

    000005
    1.2K followersView on X
CPE platform detail3 entries

3 of 3 entries

PartVendorProductVersionTarget SWTarget HW
Appmicrosoftsharepoint_server---
Appmicrosoftsharepoint_server2016--
Appmicrosoftsharepoint_server2019--

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