CVE-2026-21582
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I. Basic Information for CVE-2026-21582
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Atlassian | Crowd Data Center | 7.2.1 | - |
II. Public POCs for CVE-2026-21582
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-21582 (2)
Same Patch Batch · Atlassian · 2026-08-18 · 3 CVEs total
| CVE-2026-21580 | 8.6 HIGH | CVE-2026-21580 |
| CVE-2026-21584 | 7.6 HIGH | CVE-2026-21584 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-21582
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