How many CVEs does Six Apart have?

Six Apart has 81 published CVE records since 2003, including 14 in the last two years.

How many Six Apart CVEs are in CISA KEV?

None of Six Apart's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.

Which Six Apart products have the most CVEs?

The Six Apart products with the most published CVEs are Movable Type, Movable Type Premium (Cloud Edition), Movable Type Advanced (Software Edition), Movable Type (Cloud Edition), movabletype.

What are the most common weakness types in Six Apart CVEs?

Six Apart's CVEs most often map to these CWE weakness types: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')), CWE-94 (Improper Control of Generation of Code ('Code Injection')), CWE-89 (Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')), CWE-287 (Improper Authentication).

Are there public exploits for Six Apart vulnerabilities?

Yes — 4 of Six Apart's CVEs have a known public exploit.

How many critical Six Apart vulnerabilities are there?

Six Apart has 7 critical and 11 high-severity CVEs.

What is the average severity of Six Apart CVEs?

The average CVSS base score across Six Apart's scored CVEs is 5.9.

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81 CVEs

Six Apart Vulnerabilities

Name: Six Apart vulnerability dataset (CVEs)
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

CVE security advisories and vulnerability history for Six Apart.

81

Total CVEs

Published

0

In CISA KEV

Exploited in the wild

4

Public exploits

PoC or exploit code

5.9

Avg CVSS

2003–2026

Overview

Six Apart has 81 published CVE records since 2003, of which 0 are in CISA's Known Exploited Vulnerabilities catalog and 4 have a known public exploit. The average CVSS base score across scored CVEs is 5.9.

This page aggregates every publicly disclosed vulnerability (CVE) affecting Six Apart products, with severity breakdowns, the most-affected products, the most common weakness types, and the latest disclosures.

Security scorecard

A quick read on Six Apart's vulnerability posture, as a share of its 81 published CVEs.

Average CVSS: 5.9
Critical / high: 22%
Actively exploited (KEV): 0%
Public exploit available: 5%
Patch available: 21%

Severity and exploitation

How the CVSS severity of Six Apart's CVEs breaks down, plus how many are exploited in the wild or have public exploit code.

Critical7

High11

Medium58

Low5

In CISA’s Known Exploited Vulnerabilities catalog

0

None of Six Apart's CVEs are currently listed in CISA's KEV catalog.

Public exploits

4

4 of Six Apart's CVEs have a known public exploit available.

Most affected products

The Six Apart products with the most published CVEs. Follow any product to browse its versions and vulnerabilities.

Common weakness types

The CWE weakness categories most often found in Six Apart CVEs. Follow any weakness for its full explanation.

CNAs that assign these CVEs

The CVE Numbering Authorities that publish Six Apart CVE records.

Disclosure activity by year

How many Six Apart CVEs were published each year.

2018

1

2019

1

2020

5

2021

13

2022

4

2023

1

2025

7

2026

7

Latest Six Apart CVEs

The most recently disclosed vulnerabilities affecting Six Apart.

Medium vulnerability · 2026-05-20
CWE-862
Medium · CVSS 5.3
EPSS 0.2%2026-05-20
Critical vulnerability · 2026-04-08
CWE-94
Critical · CVSS 9.3
EPSS 0.5%2026-04-08
Medium vulnerability · 2026-04-08
CWE-89
Medium · CVSS 6.9
EPSS 0.3%2026-04-08
Medium vulnerability · 2026-02-04
CWE-1236
Medium · CVSS 4.8
EPSS 0.2%2026-02-04
Medium vulnerability · 2026-02-04
CWE-434
Medium · CVSS 5.1
EPSS 0.2%2026-02-04
Medium vulnerability · 2026-02-04
CWE-79
Medium · CVSS 4.8
EPSS 0.2%2026-02-04
Medium vulnerability · 2026-02-04
CWE-79
Medium · CVSS 4.8
EPSS 0.2%2026-02-04
Medium vulnerability · 2025-10-23
CWE-79
Medium · CVSS 4.6
EPSS 0.2%2025-10-23
Medium vulnerability · 2025-10-23
CWE-79
Medium · CVSS 4.6
EPSS 0.2%2025-10-23
Medium vulnerability · 2025-08-20
CWE-601
Medium · CVSS 5.1
EPSS 0.2%2025-08-20
Medium vulnerability · 2025-08-20
CWE-348
Medium · CVSS 6.9
EPSS 0.2%2025-08-20
Medium vulnerability · 2025-02-19
CWE-79
Medium · CVSS 5.4
EPSS 0.2%2025-02-19

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Frequently asked questions

Common questions about Six Apart vulnerabilities.

How many CVEs does Six Apart have?: Six Apart has 81 published CVE records since 2003, including 14 in the last two years.
How many Six Apart CVEs are in CISA KEV?: None of Six Apart's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.
Which Six Apart products have the most CVEs?: The Six Apart products with the most published CVEs are Movable Type, Movable Type Premium (Cloud Edition), Movable Type Advanced (Software Edition), Movable Type (Cloud Edition), movabletype.
What are the most common weakness types in Six Apart CVEs?: Six Apart's CVEs most often map to these CWE weakness types: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')), CWE-94 (Improper Control of Generation of Code ('Code Injection')), CWE-89 (Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')), CWE-287 (Improper Authentication).
Are there public exploits for Six Apart vulnerabilities?: Yes — 4 of Six Apart's CVEs have a known public exploit.
How many critical Six Apart vulnerabilities are there?: Six Apart has 7 critical and 11 high-severity CVEs.
What is the average severity of Six Apart CVEs?: The average CVSS base score across Six Apart's scored CVEs is 5.9.

References

Vulnerability data is sourced from the CVE Program; severity, KEV, and exploit signals are aggregated by RadicalNotion.AI.

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