CVE-2026-59655 json
Apache CloudStack: Unauthenticated OAuth provider client-secret disclosure
published 2026-08-21 2 mo ago modified 2026-10-16 23 d ago also EUVD-2026-63844
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 48%
- public exploits
- 0
- none known
Summary
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache CloudStack's OAuth authentication plugin while listing OAuth providers.
This issue affects Apache CloudStack: from 4.19.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.
Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.
Patch / fix
- apache cloudstack 4.20.3.1, 4.22.1.1
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.60% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected products
- Apache Software Foundation Apache CloudStack
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
lists.apache.org
/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc
vendor-advisory, mailing-list
Sources
- CVE List CVE-2026-59655
- NVD CVE-2026-59655
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.