CVE-2026-88415

8.7 HIGH 0.4% exploit odds No fix listed XSS

What it is

MCMS 6.1.1 through 6.2.1 is vulnerable to stored Cross-Site Scripting (XSS). The article content field `contentDetails` is excluded from the global XSS filter.

At a glance

Exploitability: Can be exploited over the network with a low-privilege account, but needs a user to act. High risk of data exposure, data tampering.
Exploit odds: 0.4% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-09-10 00:00 UTC ReservedThe CVE id was reserved by its CNA
2026-09-22 19:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-23 15:17 UTC Last updatedMost recent change to the record

Details

Published: 2026-09-22 19:16 UTC
Last modified: 2026-09-23 15:17 UTC
Exploit probability: 0.4% · EPSS, next 30 days
Weakness: CWE-79 · Cross-site scripting
Record status: Awaiting Analysis

Attack profile CVSS 3.1 · 8.7

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: Required
Scope: Changed
Confidentiality: High
Integrity: High
Availability: None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

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References

NVD record · CVE.org record