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CVE-2026-77274

🗓️ 22 Sep 2026 17:36:49Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 36 Views

SSRF in MCP Atlassian prior to 0.22.0 via backslash authority confusion in validate_url_for_ssrf.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-77274
22 Sep 202622:35
–circl
cvelist
Cvelist
CVE-2026-77274 MCP Atlassian: SSRF Protection Bypass
22 Sep 202617:36
–cvelist
euvd
EUVD
EUVD-2026-84649
22 Sep 202617:36
–euvd
github
Github Security Blog
MCP Atlassian: SSRF Protection Bypass
22 Sep 202620:36
–github
mend
Mend
CVE-2026-77274
22 Sep 202617:36
–mend
nvd
NVD
CVE-2026-77274
22 Sep 202618:17
–nvd
osv
OSV
GHSA-HGCF-4MQ8-5266 MCP Atlassian: SSRF Protection Bypass
22 Sep 202620:36
–osv
osv
OSV
PYSEC-2026-4096 MCP Atlassian: SSRF Protection Bypass
1 Oct 202616:38
–osv
ptsecurity
Positive Technologies
PT-2026-105848
1 Oct 202600:00
–ptsecurity
ptsecurity
Positive Technologies
PT-2026-96904
22 Sep 202600:00
–ptsecurity
Rows per page
NVD
Vulners
[
  {
    "vendor": "sooperset",
    "product": "mcp-atlassian",
    "versions": [
      {
        "version": "< 0.22.0",
        "status": "affected"
      }
    ]
  }
]

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28 Sep 2026 13:41Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.18.2
CVSS 48.8
EPSS0.00324
SSVC
36