VULNERABILITY INTELLIGENCE

CVE-2021-26074

CVSS score6.5 MEDIUM
EPSS probability0.65%
CISA KEVNot currently listed
Published2021-04-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

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.

Weakness classification

  • nvd@nist.gov: CWE-287
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-287

Primary references