CVE-2025-15702
Cloud Blocks <= 1.1.8 - Unauthenticated Stored XSS
CVE-2025-15702 is a high vulnerability (CVSS 8.8) in Unknown Cloud Blocks, published November 5, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.28%, the 20th percentile. No source names a fixed version.
- Severity
- 8.8 HighCVSS 3.1, CVE List
- Exploit chance
- 0.28%EPSS, 20th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
The Cloud Blocks WordPress plugin through 1.1.8 does not perform any authorisation or sanitisation when storing block asset URLs, allowing unauthenticated users to store malicious scripts that are executed in the browser of any privileged user, such as an administrator, who opens the block editor.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
Affected products
What each source reports
CVE List Score used
Cloud Blocks <= 1.1.8 - Unauthenticated Stored XSS
The Cloud Blocks WordPress plugin through 1.1.8 does not perform any authorisation or sanitisation when storing block asset URLs, allowing unauthenticated users to store malicious scripts that are executed in the browser of any privileged user, such as an administrator, who opens the block editor.
- Record
CVE-2025-15702- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-79
- Updated
- 2026-11-06
EUVDEUVD-2025-211267
The Cloud Blocks WordPress plugin through 1.1.8 does not perform any authorisation or sanitisation when storing block asset URLs, allowing unauthenticated users to store malicious scripts that are executed in the browser of any privileged user, such as an administrator, who opens the block editor.
- Record
EUVD-2025-211267- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-06
GitHub AdvisoriesGHSA-7fr2-62cx-g955
The Cloud Blocks WordPress plugin through 1.1.8 does not perform any authorisation or...
The Cloud Blocks WordPress plugin through 1.1.8 does not perform any authorisation or sanitisation when storing block asset URLs, allowing unauthenticated users to store malicious scripts that are executed in the browser of any privileged user, such as an administrator, who opens the block editor.
- Record
GHSA-7fr2-62cx-g955- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-79
- Updated
- 2026-11-06
NVD
The Cloud Blocks WordPress plugin through 1.1.8 does not perform any authorisation or sanitisation when storing block asset URLs, allowing unauthenticated users to store malicious scripts that are executed in the browser of any privileged user, such as an administrator, who opens the block editor.
- Record
CVE-2025-15702- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-79
- Updated
- 2026-11-09
History
| Recorded | Changed | Sources |
|---|---|---|
| cwes, severity | CVE List | |
| severity | EUVD, NVD | |
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories |
Dates are when Every CVE recorded each change. Upstream dates may differ.