CVE-2026-21582
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk32th percentile - higher than 32% of all known CVEs
Summary
Crowd Data Center version 7.2.1 has a BASM (Broken Authentication & Session Management) vulnerability with CVSS 8.8. An unauthenticated attacker can perform actions as another user.
Risk Assessment
An unauthenticated attacker can impersonate another user and perform actions on their behalf, potentially leading to unauthorized access to data or functions.
Recommendation
Upgrade Crowd Data Center to version 7.2.2 or later.
Original NVD description (English source)
This High severity BASM (Broken Authentication & Session Management) vulnerability known as CVE-2026-21582 was introduced in version 7.2.1 of Crowd Data Center. This BASM (Broken Authentication & Session Management) vulnerability, with a CVSS Score of 8.8, allows an unauthenticated attacker to perform actions as another user. Atlassian recommends that Crowd Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: Crowd Data Center 7.2: Upgrade to a release greater than or equal to 7.2.2 See the release notes (https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html). You can download the latest version of Crowd Data Center from the download center (https://www.atlassian.com/software/crowd/download-archive). This vulnerability was reported via our Penetration Testing program.