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CVE-2021-26073

Broken Authentication in Atlassian Connect Express (ACE) from version 3.0.2 before version 6.6.0: Atlassian Connect Express is a Node.js package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Express app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Express versions from 3.0.2 before 6.6.0 erroneously accept context JWTs in lifecycle endpoints (such as installation) where only server-to-server JWTs should be accepted, permitting an attacker to send authenticated re-installation events to an app.

Published

2021-04-16T03:15:12.033

Last Modified

2025-02-12T21:15:10.297

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.7 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:N/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: SINGLE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

8.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-287
  • Type: Secondary
    CWE-287
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application atlassian connect_express < 6.6.0 Yes
References