CVE-2026-21582 (GCVE-0-2026-21582)
Vulnerability from cvelistv5 – Published: 2026-08-18 22:00 – Updated: 2026-08-20 18:34
VLAI
EPSS
VEX
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 03:56 UTC
CWE
- BASM (Broken Authentication & Session Management)
- CWE-287 - Improper Authentication
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Atlassian | Crowd Data Center |
Affected:
7.2.1
Unaffected: 7.2.2 to 7.2.3 |
guessed |
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