CVE-2026-22875Network attack vector

Stored script execution via Export Sites input

Published Feb 4, 2026 · Updated Feb 4, 2026

Stored XSS in Export Sites in Six Apart Movable Type allows remote authenticated users to execute script in a logged-in user's browser. Published material does not identify the input field, storage path, or rendering function that fails to neutralize the stored value. A product account must store crafted input, and a logged-in user must open the affected interface; consequences are limited to data and actions available in that browser context.

CVSS severity4.8
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Export Sites in Six Apart Movable Type allows remote authenticated users to execute script in a logged-in user's browser. Published material does not identify the input field, storage path, or rendering function that fails to neutralize the stored value. A product account must store crafted input, and a logged-in user must open the affected interface; consequences are limited to data and actions available in that browser context.

The record

CVE
CVE-2026-22875
Published
Feb 4, 2026
Updated
Feb 4, 2026
Vendor
Six Apart Ltd.
Product
Movable Type Advanced
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.0.2 to 8.0.8 (8.0 series)
  2. Affected versionversion=8.8.0 to 8.8.1 (8.8 series)
  3. Affected versionversion=9.0.4 to 9.0.5 (9.0 series)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Six Apart Ltd. · Movable Type Advancedversion=8.0.2 to 8.0.8 (8.0 series); version=8.8.0 to 8.8.1 (8.8 series); version=9.0.4 to 9.0.5 (9.0 series)
Six Apart Ltd. · Movable Type Premium (Cloud Edition)version=2.12 (MTP 2 series); version=9.0.5 (9 series)
Six Apart Ltd. · Movable Type Premiumversion=2.13 and earlier (MTP 2 series); version=9.0.4 (MTP 9.0 series)
Six Apart Ltd. · Movable Type Premium (Advanced Edition)version=2.13 and earlier (MTP 2 series); version=9.0.4 (MTP 9.0 series)
Six Apart Ltd. · Movable Typeversion=8.0.2 to 8.0.8 (8.0 series); version=8.8.0 to 8.8.1 (8.8 series); version=9.0.4 to 9.0.5 (9.0 series)
Six Apart Ltd. · Movable Type (Cloud Edition)version=8.8.1 (8 series); version=9.0.5 (9 series)

Published CVSS scores

4.8JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
5.4JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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