CVE-2026-77261

Published: Set 22, 2026 Last Modified: Set 23, 2026

ExploitDB:

Other exploit source:

Google Dorks:

HIGH 7,1

Source: [email protected]

Attack Vector: network

Attack Complexity: high

Privileges Required: low

User Interaction: none

Scope: changed

Confidentiality: high

Integrity: low

Availability: none

Description

AI Translation Available

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.