{"id":"CVE-2021-26077","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-26077","summary":"Improper Authentication in Atlassian Connect Spring Boot","details":"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.","published":"2021-06-16T17:23:12Z","modified":"2023-11-08T04:05:20.105715Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Maven","name":"com.atlassian.connect:atlassian-connect-spring-boot","fixedVersion":"2.1.3"},{"ecosystem":"Maven","name":"com.atlassian.connect:atlassian-connect-spring-boot","fixedVersion":"2.1.5"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26077"},{"type":"WEB","url":"https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-allows-bypass-of-app-qsh-verification-via-context-jwts/47072"},{"type":"WEB","url":"https://confluence.atlassian.com/pages/viewpage.action?pageId=1063555147"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2023-11-08T04:05:20.105715Z"}}