CVE-2026-25077
Apache CloudStack: Unauthenticated Command Injection in Direct Download Templates
Severity Score
8.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track*
*SSVC
Descriptions
Account users are allowed by default to register templates to be downloaded directly to the primary storage for deploying instances using the KVM hypervisor. Due to missing file name sanitization, an attacker can register malicious templates to execute arbitrary code on the KVM hosts. This can result in the compromise of resource integrity and confidentiality, data loss, denial of service, and availability of the KVM-based infrastructure managed by CloudStack. Users are recommended to upgrade to Apache CloudStack versions 4.20.3.0 or 4.22.0.1, or later, which fixes this issue.
*Credits:
Reza at HazardLab (https://hazardlab.ninja)
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track*
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2026-01-28 CVE Reserved
- 2026-05-08 CVE Published
- 2026-05-10 CVE Updated
- 2026-05-14 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-94: Improper Control of Generation of Code ('Code Injection')
CAPEC
References (2)
| URL | Tag | Source |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/05/09/6 |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://lists.apache.org/thread/n8mt5b7wkpysstb8w7rr9f02kc5cq2xm | 2026-05-10 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Apache Search vendor "Apache" | Cloudstack Search vendor "Apache" for product "Cloudstack" | >= 4.11.0.0 < 4.20.3.0 Search vendor "Apache" for product "Cloudstack" and version " >= 4.11.0.0 < 4.20.3.0" | - |
Affected
| ||||||
| Apache Search vendor "Apache" | Cloudstack Search vendor "Apache" for product "Cloudstack" | >= 4.21.0.0 < 4.22.0.1 Search vendor "Apache" for product "Cloudstack" and version " >= 4.21.0.0 < 4.22.0.1" | - |
Affected
| ||||||