TI-2025-16288 Aliases CVE-2025-22388 GHSA-52qc-q82v-p8hj

An issue was discovered in Optimizely EPiServer.CMS.Core before 12.22.0.

LOW 26CWE-79Published 2025-01-04 · Updated 2025-01-06

Key facts

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

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

Summary

An issue was discovered in Optimizely EPiServer.CMS.Core before 12.22.0. A high-severity Stored Cross-Site Scripting (XSS) vulnerability exists in the CMS, allowing malicious actors to inject and execute arbitrary JavaScript code, potentially compromising user data, escalating privileges, or executing unauthorized actions. The issue exists in multiple areas, including content editing, link management, and file uploads.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00373 31st percentileScored 2026-11-07

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: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:optimizely:optimizely_cms::::::::	before 12.22.0	Vulnerable	Optimizely

cpe:2.3:a:optimizely:optimizely_cms:*:*:*:*:*:*:*:* Versions before 12.22.0 Vulnerable ·Optimizely

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-22388
2026-10-03 Alias added: GHSA-52qc-q82v-p8hj

References

Advisory 1

https://support.optimizely.com/hc/en-us/articles/33182047260557-Content-Management-System-CMS-Security-Advisory-CMS-2025-01

TI-2023-15203 Optimizely CMS UI before v12.16.0 was discovered to contain a cross-site scripting (XSS)… CVSS 3.1MEDIUM 4.8
TI-2025-16290 An issue was discovered in Optimizely EPiServer.CMS.Core before 12.32.0. CVSS 3.1HIGH 7.5
TI-2025-16289 An issue was discovered in Optimizely EPiServer.CMS.Core before 12.32.0. CVSS 3.1HIGH 8.0

Sources

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