Feed/CVE-2026-77261
CVE-2026-77261HIGHCVSS 7.1

CVE-2026-77261

Published Sep 22, 2026·Updated Sep 22, 2026

NVD Description

MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, _make_ssrf_safe_hook is omitted from JiraFetcher and ConfluenceFetcher sessions created through the basic-auth and oauth_pat branches. If an attacker-controlled or compromised configured Atlassian instance returns a redirect to an internal address, those sessions can follow the redirect without revalidating its destination. This issue is fixed in version 0.22.0.

Affected Packages (1)

mcp-atlassianPYPI
Fixed in 0.22.0

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N

References

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