CVE-2021-26074

MEDIUM

6.5

CVSS Severity Score

EPSS Score0.0640%

EPSS Percentile14.19th

Published2021年4月16日

Last Modified2025年2月12日

Vulnerability Description

Broken Authentication in Atlassian Connect Spring Boot (ACSB) from version 1.1.0 before version 2.1.3: Atlassian Connect Spring Boot is a Java Spring Boot package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Spring Boot app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Spring Boot versions from version 1.1.0 before version 2.1.3 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.

Affected Platforms (CPE)

📦

Atlassian

Connect Spring Boot

>= 1.1.0 and < 2.1.3

References & Advisories

🔗 https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-allows-bypass-of-app-qsh-verification-via-context-jwts/47072

🔗 https://confluence.atlassian.com/pages/viewpage.action?pageId=1051986106