No exploitation reportedFix available

CVE-2026-25776

Q: Is CVE-2026-25776 actively exploited?

Active exploitation of CVE-2026-25776 has not been confirmed. Its EPSS score was 1.0% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2026-25776?

CVE-2026-25776 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2026-04-08
Fixed in9.0.7 · 8.8.3 · 8.0.10
WeaknessCWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Movable Type provided by Six Apart Ltd. contains a code injection vulnerability which may allow an attacker to execute arbitrary Perl script.

Timeline

dates in UTC

2026-04-0809:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-25776?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-25776?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Sixapart movable type

Branch	Affected	Fixed in	Source
9.0	≥ 9.0.1, < 9.0.7	9.0.7	NVD
8.8	≥ 8.8.0, < 8.8.3	8.8.3	NVD
8.0	≥ 8.0.2, < 8.0.10	8.0.10	NVD
2.14	≤ 2.14	no fix published	NVD
9.0	= 9.0.5	no fix published	NVD
9.0	= 9.0.6	no fix published	NVD
9.1	= 9.1.0	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Sixapart movable type to 9.0.7 · 8.8.3 · 8.0.10

Advisories and patches

movabletype.orgVendor Advisory
www.sixapart.jpVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionnone2026-04-08
OpenCVESSVC decisionnone—
CNACVSS 4.09.3read 2026-10-23
CNACVSS 3.09.8read 2026-10-23
CNAweakness (CWE)CWE-94read 2026-10-23
FIRST EPSSEPSS score1.0 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: 2026-04-08
Last Modified: 2026-07-25
NVD status: Analyzed

Frequently asked questions

What is CVE-2026-25776?

Movable Type provided by Six Apart Ltd. contains a code injection vulnerability which may allow an attacker to execute arbitrary Perl script.

Is CVE-2026-25776 actively exploited?

Active exploitation of CVE-2026-25776 has not been confirmed. Its EPSS score was 1.0% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-25776?

CVE-2026-25776 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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