CVE-2021-26073

High

Description

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.

SeverityHigh
CVSS7.7
Exploit probability—
ProductAtlassian Connect Express
PublishedApr 16, 2021
First seenApr 16, 2021

How to fix

Update
  • atlassian connect_express6.6.0 or later
  • atlassian-connect-express6.6.0 or later

Affected products

ProductAffected versionsFixed in
atlassian connect_express3.0.2 ≤ v < 6.6.06.6.0
atlassian-connect-expressnpm3.0.2 ≤ v < 6.6.06.6.0

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CVE-2021-26073 · Atlassian Connect Express · Dark Radar