TYPO3 CMS Allows Insecure Deserialization via Mailer File Spool
Priority LOW 23CWE-502Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Code execution
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502.
Summary
TYPO3's mail‑file spool deserialization flaw lets local users with write access to the spool directory craft a malicious file that is deserialized during the mailer:spool:send command, enabling arbitrary PHP code execution on the web server. This issue affects TYPO3 CMS versions 10.0.0-10.4.54, 11.0.0-11.5.48, 12.0.0-12.4.40, 13.0.0-13.4.22 and 14.0.0-14.0.1.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00184 8th percentileScored 2026-11-07
Fix Fixed TYPO3 CMS (TYPO3): 10.4.55, 11.5.49, 12.4.41 +2typo3/cms-core (Packagist): 14.0.2, 13.4.23, 12.4.41 +2
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 |
|---|---|---|---|---|---|
| TYPO3 | TYPO3 CMS | 10.0.0 to before 10.4.55; 11.0.0 to before 11.5.49; 12.0.0 to before 12.4.41; 13.0.0 to before 13.4.23; 14.0.0 to before 14.0.2 | 10.4.55, 11.5.49, 12.4.41, 13.4.23, 14.0.2 | Patch available | CNA |
| — | typo3/cms-core (Packagist) | 14.0.0 to before 14.0.2 | 14.0.2 | Patch available | GHSA-7vp9-x248-9vr9 |
| — | typo3/cms-core (Packagist) | 13.0.0 to before 13.4.23 | 13.4.23 | Patch available | GHSA-7vp9-x248-9vr9 |
| — | typo3/cms-core (Packagist) | 12.0.0 to before 12.4.41 | 12.4.41 | Patch available | GHSA-7vp9-x248-9vr9 |
| — | typo3/cms-core (Packagist) | 11.0.0 to before 11.5.49 | 11.5.49 | Patch available | GHSA-7vp9-x248-9vr9 |
| — | typo3/cms-core (Packagist) | 10.0.0 to before 10.4.55 | 10.4.55 | Patch available | GHSA-7vp9-x248-9vr9 |
- TYPO3 CMS VendorTYPO3 Affected 10.0.0 to before 10.4.55; 11.0.0 to before 11.5.49; 12.0.0 to before 12.4.41; 13.0.0 to before 13.4.23; 14.0.0 to before 14.0.2 Fixed in 10.4.55, 11.5.49, 12.4.41, 13.4.23, 14.0.2 Patch available CNA
- typo3/cms-core (Packagist) Vendor— Affected 14.0.0 to before 14.0.2 Fixed in 14.0.2 Patch available GHSA-7vp9-x248-9vr9
- typo3/cms-core (Packagist) Vendor— Affected 13.0.0 to before 13.4.23 Fixed in 13.4.23 Patch available GHSA-7vp9-x248-9vr9
- typo3/cms-core (Packagist) Vendor— Affected 12.0.0 to before 12.4.41 Fixed in 12.4.41 Patch available GHSA-7vp9-x248-9vr9
- typo3/cms-core (Packagist) Vendor— Affected 11.0.0 to before 11.5.49 Fixed in 11.5.49 Patch available GHSA-7vp9-x248-9vr9
- typo3/cms-core (Packagist) Vendor— Affected 10.0.0 to before 10.4.55 Fixed in 10.4.55 Patch available GHSA-7vp9-x248-9vr9
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* | 10.0.0 to before 10.4.55; 11.0.0 to before 11.5.49; 12.0.0 to before 12.4.41; 13.0.0 to before 13.4.23; 14.0.0 to before 14.0.2 | Vulnerable | TYPO3 |
- cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* Versions 10.0.0 to before 10.4.55; 11.0.0 to before 11.5.49; 12.0.0 to before 12.4.41; 13.0.0 to before 13.4.23; 14.0.0 to before 14.0.2 Vulnerable ·TYPO3
Remediation
- Fix · CNA TYPO3 CMS (TYPO3) Fixed in 10.4.55, 11.5.49, 12.4.41, 13.4.23, 14.0.2
- Fix · GHSA-7vp9-x248-9vr9 typo3/cms-core (Packagist) Fixed in 14.0.2 Advisory →
- Fix · GHSA-7vp9-x248-9vr9 typo3/cms-core (Packagist) Fixed in 13.4.23 Advisory →
- Fix · GHSA-7vp9-x248-9vr9 typo3/cms-core (Packagist) Fixed in 12.4.41 Advisory →
- Fix · GHSA-7vp9-x248-9vr9 typo3/cms-core (Packagist) Fixed in 11.5.49 Advisory →
- Fix · GHSA-7vp9-x248-9vr9 typo3/cms-core (Packagist) Fixed in 10.4.55 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
TYPO3 CMS 10.4.55, 11.5.49 and 3 more versions
4 records Highest priority Priority LOW 4 LOW
Other records, highest priority first
- TI-2025-36665 TYPO3 CMS Allows Broken Access Control in Recycler ModulePriority LOW 31
- TI-2025-36664 TYPO3 CMS Allows Broken Access Control in Redirects ModulePriority LOW 24
- TI-2025-36663 TYPO3 CMS Allows Broken Access Control in Edit Document ControllerPriority LOW 24
Timeline
- 2026-10-02 Threatist record created from CVE-2026-0859
- 2026-10-03 Alias added: GHSA-7vp9-x248-9vr9
References
Advisory 2
More Typo3 vulnerabilities
- TI-2023-10314 Persisted Cross-Site Scripting in Frontend Rendering in typo3 CVSS 3.1HIGH 8.8
- TI-2010-03538 The jumpUrl (aka access tracking) implementation in tslib/class.tslib_fe.php in TYPO3… CVSS 2.0HIGH 7.1
- TI-2009-00775 The jumpUrl mechanism in class.tslib_fe.php in TYPO3 3.3.x through 3.8.x, 4.0 before… CVSS 2.0MEDIUM 5.0
- TI-2009-00241 The Indexed Search Engine (indexed_search) system extension in TYPO3 4.0.0 through 4.0.9… CVSS 2.0HIGH 10.0
- TI-2020-08940 Improperly Controlled Modification of Dynamically-Determined Object Attributes in TYPO3 CMS CVSS 3.1CRITICAL 10.0
- TI-2011-03994 Improper authentication in TYPO3 CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-0859 · CVE Program
- CVE-2026-0859 · NVD
- FIRST EPSS
- GHSA-7vp9-x248-9vr9 · GitHub Advisory Database · CC BY 4.0
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