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TI-2025-44020 Aliases CVE-2025-15702GHSA-7fr2-62cx-g955

Unauthenticated stored XSS in Cloud Blocks WordPress plugin

Priority MEDIUM 40CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

The Cloud Blocks WordPress plugin through 1.1.8 does not authorise or sanitise block asset URLs when storing them (CWE-79). An unauthenticated attacker can store malicious scripts that run in the browser of a privileged user, such as an administrator, who opens the block editor. The references include a link to an exploit.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00276 20th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownCloud Blocksup to 1.1.8—No fix listedCNA
  • Cloud Blocks VendorUnknown Affected up to 1.1.8 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Cloud Blocks.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Timeline

  1. 2026-11-05 Threatist record created from CVE-2025-15702
  2. 2026-11-05 Alias added: GHSA-7fr2-62cx-g955
  3. 2026-11-06 CVSS score added · CISA ADP
  4. 2026-11-06 Weakness changed · CISA ADP
  5. 2026-11-06 CISA SSVC decision points changed
  6. 2026-11-08 Priority changed: LOW → MEDIUM

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences