CVE-2021-26077

State: Published
Severity: 9.1 Critical
Published: May 9, 2021
Updated: Feb 12, 2025
Reserved: Jan 25, 2021

Description

Broken Authentication in Atlassian Connect Spring Boot (ACSB) in version 1.1.0 before 2.1.3 and from version 2.1.4 before 2.1.5: 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 1.1.0 before 2.1.3 and versions 2.1.4 before 2.1.5 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.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L	CISA-ADP

Weaknesses

CWE-287 Improper Authentication

Affected Products

Product	Versions
Atlassian Connect Spring Boot (ACSB)Atlassian	1.1.0 to before unspecifiedAffected before 2.1.3Affected 2.1.4 to before unspecifiedAffected before 2.1.5Affected

References

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