CVE-2026-0859 json
TYPO3 CMS Allows Insecure Deserialization via Mailer File Spool
published 9mo ago modified 4mo ago also GHSA-7vp9-x248-9vr9 , EUVD-2026-2014
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
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.
Patch / fix
- packagist typo3/cms-core 10.4.55, 11.5.49, 12.4.41, 13.4.23, 14.0.2
- TYPO3 TYPO3 CMS 10.4.55, 11.5.49, 12.4.41, 13.4.23, 14.0.2
- github.com/TYPO3/typo3@3225d70 commit
- github.com/TYPO3/typo3@e0f0cee commit
- github.com/TYPO3/typo3@722bf71 commit
Is CVE-2026-0859 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 9mo ago
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.2 | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H |
| CNA | 4.0 | 5.2 | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H/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 |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | typo3/cms-core | >=14.0.0, <14.0.2 >=13.0.0, <13.4.23 >=12.0.0, <12.4.41 >=11.0.0, <11.5.49 >=10.0.0, <10.4.55 |
14.0.2 13.4.23 12.4.41 11.5.49 10.4.55 |
Affected products
- TYPO3 TYPO3 CMS
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
github.com
/TYPO3/typo3/commit/3225d705080a1bde57a66689621c947da5a4782f
patch, web
-
github.com
/TYPO3/typo3/commit/e0f0ceee480c203fbb60b87454f5f193e541d27f
patch, web
-
github.com
/TYPO3/typo3/commit/722bf71c118b0a8e4f2c2494854437d846799a13
patch, web
-
typo3.org
/security/advisory/typo3-core-sa-2026-004
vendor-advisory, web
-
github.com
/TYPO3/typo3/security/advisories/GHSA-7vp9-x248-9vr9
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-0859
advisory
-
github.com
/TYPO3/typo3
package
Sources
- CVE List CVE-2026-0859
- GitHub Advisory GHSA-7vp9-x248-9vr9
- NVD CVE-2026-0859
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