Cross-site scripting in Six Apart Ltd. Movable Type
Priority LOW 24CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Movable Type contains a stored cross-site scripting vulnerability in the HTML edit mode of MT Block Editor. It is exploitable when TinyMCE6 is used as a rich text editor and an arbitrary script may be executed on a logged-in user's web browser.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00225 13th 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 |
|---|---|---|---|---|---|
| Six Apart Ltd. | Movable Type (8.4.x series) | up to 8.4.1 | — | No fix listed | CNA |
| Six Apart Ltd. | Movable Type (8.0.x series) | up to 8.0.5 | — | No fix listed | CNA |
| Six Apart Ltd. | Movable Type Advanced (8.4.x series) | up to 8.4.1 | — | No fix listed | CNA |
| Six Apart Ltd. | Movable Type Advanced (8.0.x series) | up to 8.0.5 | — | No fix listed | CNA |
| Six Apart Ltd. | Movable Type Premium (2.x series) | up to 2.06 | — | No fix listed | CNA |
| Six Apart Ltd. | Movable Type Premium (Advanced Edition) (2.x series) | up to 2.06 | — | No fix listed | CNA |
| Six Apart Ltd. | Movable Type Cloud Edition (8.x series) | up to 8.4.1 | — | No fix listed | CNA |
| Six Apart Ltd. | Movable Type Premium Cloud Edition (2.x series) | up to 2.06 | — | No fix listed | CNA |
- Movable Type (8.4.x series) VendorSix Apart Ltd. Affected up to 8.4.1 Fixed in — No fix listed CNA
- Movable Type (8.0.x series) VendorSix Apart Ltd. Affected up to 8.0.5 Fixed in — No fix listed CNA
- Movable Type Advanced (8.4.x series) VendorSix Apart Ltd. Affected up to 8.4.1 Fixed in — No fix listed CNA
- Movable Type Advanced (8.0.x series) VendorSix Apart Ltd. Affected up to 8.0.5 Fixed in — No fix listed CNA
- Movable Type Premium (2.x series) VendorSix Apart Ltd. Affected up to 2.06 Fixed in — No fix listed CNA
- Movable Type Premium (Advanced Edition) (2.x series) VendorSix Apart Ltd. Affected up to 2.06 Fixed in — No fix listed CNA
- Movable Type Cloud Edition (8.x series) VendorSix Apart Ltd. Affected up to 8.4.1 Fixed in — No fix listed CNA
- Movable Type Premium Cloud Edition (2.x series) VendorSix Apart Ltd. Affected up to 2.06 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-24841
- 2026-10-03 Alias added: GHSA-9r2m-55p3-3v46
References
More Six Apart Ltd. vulnerabilities
- TI-2021-04052 OS command injection in Six Apart Ltd. Movable Type CVSS 3.1CRITICAL 9.8
- TI-2026-20843 Code injection in Six Apart Ltd. Movable Type CVSS 4.0CRITICAL 9.3
- TI-2026-69104 Code injection in Movable Type upgrade script CVSS 4.0CRITICAL 9.3
- TI-2022-17791 Code injection in Six Apart Ltd. Movable Type XMLRPC API CVSS 3.1CRITICAL 9.8
- TI-2026-69105 SQL injection in Movable Type Site Search function CVSS 4.0HIGH 8.8
- TI-2020-04547 Unrestricted file upload in Six Apart Ltd. Movable Type CVSS 3.1HIGH 8.8
Sources
- CVE-2025-24841 · CVE Program
- CVE-2025-24841 · NVD
- FIRST EPSS
- GHSA-9r2m-55p3-3v46 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences