CVE-2021-26073

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 16-04-2021 05:15

Last modified: - 01-03-2022 05:23

Total changes: - 6

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

Low

Attack complexity

Network

Attack vector

None

Availability

None

Confidentiality

High

Integrity

Low

Privileges required

Changed

Scope

None

User interaction

7.7

Base score

3.1

4.0

Exploitability score

Impact score

Verification logic

vendor=atlassian AND product=connect_express AND target_software=node.js AND versionStartIncluding=3.0.2 AND versionEndExcluding=6.6.0

Reference

Keywords

CVE-2021-26073

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2021-26073

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures