CVE-2026-77261(mcp-atlassian / mcp_atlassian)

LOWCVSS 8.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-918

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • mcp_atlassian

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Affected systems

Products
mcp_atlassian

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-27: 109-27
Referenced assets1 URL
By indicator
Full discourse1 post
  • takenaka hiroya@Joe_Biden_ja

    MCP Atlassian に SSRF の脆弱性(CVE-2026-77261)。AI エージェントから Jira / Confluence をつなぐ MCP サーバーです。修正版 0.22.0 は GitHub のアドバイザリで確認しました。使っている方は更新を。 https://ai-news.autoarticles.net/article/post_1790478062279_mr5mpe

    0000039
    556 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appmcp-atlassianmcp_atlassian---

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