CVE-2026-0859 (GCVE-0-2026-0859)
Vulnerability from cvelistv5 – Published: 2026-01-13 11:54 – Updated: 2026-01-13 14:12
VLAI
EPSS
VEX
Title
TYPO3 CMS Allows Insecure Deserialization via Mailer File Spool
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-13 14:11 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
4 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| TYPO3 | TYPO3 CMS |
Affected:
10.0.0 , < 10.4.55
(semver)
Affected: 11.0.0 , < 11.5.49 (semver) Affected: 12.0.0 , < 12.4.41 (semver) Affected: 13.0.0 , < 13.4.23 (semver) Affected: 14.0.0 , < 14.0.2 (semver) cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* |
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"value": "TYPO3\u0027s mail\u2011file 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."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"baseScore": 5.2,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-502",
"description": "CWE-502 Deserialization of Untrusted Data",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-01-13T11:54:25.069Z",
"orgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
"shortName": "TYPO3"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://typo3.org/security/advisory/typo3-core-sa-2026-004"
},
{
"name": "Git commit of main branch",
"tags": [
"patch"
],
"url": "https://github.com/TYPO3/typo3/commit/3225d705080a1bde57a66689621c947da5a4782f"
},
{
"name": "Git commit of 13.4 branch",
"tags": [
"patch"
],
"url": "https://github.com/TYPO3/typo3/commit/e0f0ceee480c203fbb60b87454f5f193e541d27f"
},
{
"name": "Git commit of 12.4 branch",
"tags": [
"patch"
],
"url": "https://github.com/TYPO3/typo3/commit/722bf71c118b0a8e4f2c2494854437d846799a13"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "TYPO3 CMS Allows Insecure Deserialization via Mailer File Spool",
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
"assignerShortName": "TYPO3",
"cveId": "CVE-2026-0859",
"datePublished": "2026-01-13T11:54:11.494Z",
"dateReserved": "2026-01-12T11:25:46.041Z",
"dateUpdated": "2026-01-13T14:12:12.132Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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