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CVE-2026-77244— [mcp-atlassian] Authentication bypass in HTTP transport: AtlassianOpaqueTokenVerifier accepts any non-empty token

一分钟漏洞结论

影响对象
sooperset mcp-atlassian
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, the HTTP transport accepts requests without a verified user identity and downstream fetcher construction falls back to the operator's globally

CVSS 10.0 · Critical

影响版本矩阵 1

厂商产品 版本范围状态
sooperset mcp-atlassian < 0.22.0 affected
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一、 漏洞 CVE-2026-77244 基础信息

漏洞信息

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Vulnerability Title
[mcp-atlassian] Authentication bypass in HTTP transport: AtlassianOpaqueTokenVerifier accepts any non-empty token
来源: CVE Program / CVE List V5
Vulnerability Description
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, the HTTP transport accepts requests without a verified user identity and downstream fetcher construction falls back to the operator's globally configured Jira or Confluence credentials. A network client that can reach the MCP endpoint can invoke Atlassian tools as the operator, including read and write operations available to that account. The advisory traces the vulnerable input and processing flow through UserTokenMiddleware, AtlassianOpaqueTokenVerifier, _get_fetcher, and streamable-http, which identify the affected entry points, controls, and code paths. This issue is fixed in version 0.22.0.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
sooperset mcp-atlassian < 0.22.0 -

二、漏洞 CVE-2026-77244 的公开POC

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三、漏洞 CVE-2026-77244 的情报信息

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CVE-2026-77244 补丁与修复 (1)

CVE-2026-77244 厂商页面 (1)

CVE-2026-77244 其他参考 (1)

同批安全公告 · sooperset · 2026-09-22 · 共 29 条

CVE-2026-77254 9.1 CRITICAL MCP Atlassian: Unauthenticated HTTP MCP requests can use globally configured Jira and Conf
CVE-2026-77274 8.8 HIGH MCP Atlassian: SSRF Protection Bypass
CVE-2026-77243 8.8 HIGH MCP Atlassian: ENABLED_TOOLS / Toolset authorization bypass
CVE-2026-77255 8.6 HIGH MCP Atlassian: Arbitrary File Read & Exfiltration (Confused Deputy) in JIRA update_issue
CVE-2026-77262 8.6 HIGH MCP Atlassian: Path Traversal / Arbitrary File Read in confluence_upload_attachment MCP to
CVE-2026-77248 8.6 HIGH MCP Atlassian: Unauthenticated arbitrary local file read via upload_attachment file_path,
CVE-2026-77247 8.3 HIGH MCP Atlassian: Arbitrary server-local file upload to Jira/Confluence attachments via unres
CVE-2026-77260 8.3 HIGH MCP Atlassian: Arbitrary local file READ via unconstrained file_path in upload_attachment
CVE-2026-77257 8.3 HIGH MCP Atlassian: HTTP upload tools accept arbitrary server-local file paths
CVE-2026-77267 8.3 HIGH mcp-atlassian has an incomplete SSRF remediation
CVE-2026-77271 8.3 HIGH MCP Atlassian: Incomplete path traversal fix allows intra-CWD module overwrite and RCE (by
CVE-2026-77251 8.3 HIGH MCP Atlassian: JIRA_PROJECTS_FILTER / CONFLUENCE_SPACES_FILTER allow forbidden-project con
CVE-2026-77256 8.3 HIGH MCP Atlassian: OAuth refresh-token backup file is world-readable under default Unix umask
CVE-2026-77259 7.7 HIGH MCP Atlassian: Arbitrary file read via confluence_upload_attachment allows exfiltration of
CVE-2026-77258 7.7 HIGH MCP Atlassian: Arbitrary file read/exfiltration via upload_attachment missing validate_saf
CVE-2026-77242 7.5 HIGH MCP Atlassian: Incomplete fix for CVE-2026-27826: DNS rebinding bypasses SSRF validation (
CVE-2026-77246 7.4 HIGH MCP Atlassian: MCP HTTP Client Server-Local File Exfiltration via Unvalidated Attachment U
CVE-2026-77253 7.1 HIGH MCP Atlassian: Jira and Confluence attachment upload tools can read arbitrary server-local
CVE-2026-77261 7.1 HIGH MCP Atlassian: SSRF redirect protection missing for basic-auth and OAuth authentication br
CVE-2026-77269 6.5 MEDIUM MCP Atlassian: Path traversal in upload_attachment allows arbitrary file read (incomplete

显示前 20 条，共 29 条。 查看全部 &rarr; →

IV. Related Vulnerabilities

Same product: mcp-atlassian
Same vendor: sooperset
Same weakness: CWE-287

V. Comments for CVE-2026-77244

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