CVE-2021-26077

Summary

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.

Affected Software

VendorProductVersion RangeStatus
AtlassianAtlassian Connect Spring Boot (ACSB)1.1.0 < unspecifiedaffected
AtlassianAtlassian Connect Spring Boot (ACSB)unspecified < 2.1.3affected
AtlassianAtlassian Connect Spring Boot (ACSB)2.1.4 < unspecifiedaffected
AtlassianAtlassian Connect Spring Boot (ACSB)unspecified < 2.1.5affected

Weaknesses

  • Broken Authentication

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References