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.

Score

CVSS 3.1 7.7 High

Status

Modified - security@atlassian.com

Published

2021-04-16

Last modified

2025-02-12

Weaknesses

CWE-287

Affected products

• Atlassian Connect Express Ace (Atlassian)
• Connect Express (Atlassian)

References

• https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-a%5B%E2%80%A6%5Dypass-of-ap…
• https://confluence.atlassian.com/pages/viewpage.action?pageId=1051986099
• https://security.netapp.com/advisory/ntap-20210604-0004/