{"id":"GHSA-4v96-m8xv-x83v","summary":"Broken Authentication in Atlassian Connect Express","details":"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 between 3.0.2 - 6.5.0 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.","aliases":["CVE-2021-26073"],"modified":"2025-02-12T22:27:03.009299Z","published":"2022-05-24T22:28:12Z","database_specific":{"nvd_published_at":"2021-04-16T03:15:00Z","cwe_ids":["CWE-287","CWE-863"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2025-02-12T21:53:02Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26073"},{"type":"WEB","url":"https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-a%5B%E2%80%A6%5Dypass-of-app-qsh-verification-via-context-jwts/47072"},{"type":"WEB","url":"https://confluence.atlassian.com/pages/viewpage.action?pageId=1051986099"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20210604-0004"},{"type":"PACKAGE","url":"http://bitbucket.org/atlassian/atlassian-connect-express"}],"affected":[{"package":{"name":"atlassian-connect-express","ecosystem":"npm","purl":"pkg:npm/atlassian-connect-express"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.2"},{"fixed":"6.6.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-4v96-m8xv-x83v/GHSA-4v96-m8xv-x83v.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N"}]}