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CVE-2026-77272 MCP Atlassian: Reflected XSS in OAuth Setup Callback Handler

🗓️ 22 Sep 2026 18:33:18Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 2 Views

Reflected XSS in MCP Atlassian prior to 0.22.0 via OAuth error query parameter.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-77272
22 Sep 202618:33
cve
euvd
EUVD
EUVD-2026-84749
22 Sep 202618:33
euvd
github
Github Security Blog
MCP Atlassian: Reflected XSS in OAuth Setup Callback Handler
22 Sep 202620:35
github
nvd
NVD
CVE-2026-77272
22 Sep 202619:16
nvd
osv
OSV
GHSA-G2R2-3J32-J27X MCP Atlassian: Reflected XSS in OAuth Setup Callback Handler
22 Sep 202620:35
osv
[
  {
    "vendor": "sooperset",
    "product": "mcp-atlassian",
    "versions": [
      {
        "version": "< 0.22.0",
        "status": "affected"
      }
    ]
  }
]

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