Vulnerability-Lookup

CVE-2026-0859 (GCVE-0-2026-0859)

Vulnerability from cvelistv5 – Published: 2026-01-13 11:54 – Updated: 2026-01-13 14:12

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

5.2 (Medium)


                        
                          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

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

TYPO3 CNA under the mitre root

CNA scorecard B 82/100 over 74 records in the last 180 days details

References

4 references

URL	Tags
https://typo3.org/security/advisory/typo3-core-sa…	vendor-advisory
https://github.com/TYPO3/typo3/commit/3225d705080…	patch
https://github.com/TYPO3/typo3/commit/e0f0ceee480…	patch
https://github.com/TYPO3/typo3/commit/722bf71c118…	patch

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::::::::

Credits

Vitaly Simonovich Elias Häußler Oliver Hader

Show details on NVD website

JSON

To clipboard

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CERTFR-2026-AVI-0037

Vulnerability from certfr_avis - Published: 2026-01-14 - Updated: 2026-01-14

De multiples vulnérabilités ont été découvertes dans Typo3. Elles permettent à un attaquant de provoquer une exécution de code arbitraire et un contournement de la politique de sécurité.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
Typo3	Typo3	typo3/cms-backend versions antérieures à 14.0.2 pour composer
Typo3	Typo3	typo3/cms-backend versions antérieures à 12.4.41 pour composer
Typo3	Typo3	typo3/cms-core versions antérieures à 13.4.23 pour composer
Typo3	Typo3	typo3/cms-recycler versions antérieures à 10.4.55 pour composer
Typo3	Typo3	typo3/cms-backend versions antérieures à 13.4.23 pour composer
Typo3	Typo3	typo3/cms-redirects versions antérieures à 12.4.41 pour composer
Typo3	Typo3	typo3/cms-recycler versions antérieures à 11.5.49 pour composer
Typo3	Typo3	typo3/cms-core versions antérieures à 11.5.49 pour composer
Typo3	Typo3	typo3/cms-backend versions antérieures à 11.5.49 pour composer
Typo3	Typo3	typo3/cms-recycler versions antérieures à 14.0.2 pour composer
Typo3	Typo3	typo3/cms-core versions antérieures à 10.4.55 pour composer
Typo3	Typo3	typo3/cms-core versions antérieures à 12.4.41 pour composer
Typo3	Typo3	typo3/cms-redirects versions antérieures à 10.4.55 pour composer
Typo3	Typo3	typo3/cms-core versions antérieures à 14.0.2 pour composer
Typo3	Typo3	typo3/cms-backend versions antérieures à 10.4.55 pour composer
Typo3	Typo3	typo3/cms-recycler versions antérieures à 13.4.23 pour composer
Typo3	Typo3	typo3/cms-redirects versions antérieures à 13.4.23 pour composer
Typo3	Typo3	typo3/cms-redirects versions antérieures à 14.0.2 pour composer
Typo3	Typo3	typo3/cms-redirects versions antérieures à 11.5.49 pour composer
Typo3	Typo3	typo3/cms-recycler versions antérieures à 12.4.41 pour composer

References

Title

Publication Time

FKIE_CVE-2026-0859

Vulnerability from fkie_nvd - Published: 2026-01-13 12:15 - Updated: 2026-06-17 10:11

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

URL	Tags
f4fb688c-4412-4426-b4b8-421ecf27b14a	https://github.com/TYPO3/typo3/commit/3225d705080a1bde57a66689621c947da5a4782f	Patch
f4fb688c-4412-4426-b4b8-421ecf27b14a	https://github.com/TYPO3/typo3/commit/722bf71c118b0a8e4f2c2494854437d846799a13	Patch
f4fb688c-4412-4426-b4b8-421ecf27b14a	https://github.com/TYPO3/typo3/commit/e0f0ceee480c203fbb60b87454f5f193e541d27f	Patch
f4fb688c-4412-4426-b4b8-421ecf27b14a	https://typo3.org/security/advisory/typo3-core-sa-2026-004	Vendor Advisory

Impacted products

Vendor	Product	Version
typo3	typo3	*
typo3	typo3	*
typo3	typo3	*
typo3	typo3	*
typo3	typo3	*

JSON

To clipboard

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GHSA-7VP9-X248-9VR9

Vulnerability from github – Published: 2026-01-13 21:54 – Updated: 2026-01-13 21:54

Summary

TYPO3 CMS Allows Insecure Deserialization via Mailer File Spool

Details

Problem

Local platform users who can write to TYPO3’s mail‑file spool directory can craft a file that the system will automatically deserialize without any class restrictions. This flaw allows an attacker to inject and execute arbitrary PHP code in the public scope of the web server.

The vulnerability is triggered when TYPO3 is configured with $GLOBALS['TYPO3_CONF_VARS']['MAIL']['transport_spool_type'] = 'file'; and a scheduler task or cron job runs the command mailer:spool:send. The spool‑send operation performs the insecure deserialization that is at the core of this issue.

Solution

Update to TYPO3 versions 10.4.55 ELTS, 11.5.49 ELTS, 12.4.41 LTS, 13.4.23 LTS, 14.0.2 that fix the problem described.

Credits

Thanks to Vitaly Simonovich for reporting this issue, and to TYPO3 security team members Elias Häußler and Oliver Hader for fixing it.

References

TYPO3-CORE-SA-2026-004

Severity

5.2 (Medium)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [
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      "database_specific": {
        "last_known_affected_version_range": "\u003c= 14.0.1"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "typo3/cms-core"
      },
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              "introduced": "14.0.0"
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            {
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    "github_reviewed": true,
    "github_reviewed_at": "2026-01-13T21:54:06Z",
    "nvd_published_at": "2026-01-13T12:15:50Z",
    "severity": "MODERATE"
  },
  "details": "### Problem\nLocal platform users who can write to TYPO3\u2019s mail\u2011file spool directory can craft a file that the system will automatically deserialize without any class restrictions. This flaw allows an attacker to inject and execute arbitrary PHP code in the public scope of the web server.\n\nThe vulnerability is triggered when TYPO3 is configured with `$GLOBALS[\u0027TYPO3_CONF_VARS\u0027][\u0027MAIL\u0027][\u0027transport_spool_type\u0027] = \u0027file\u0027;` and a scheduler task or cron job runs the command `mailer:spool:send`. The spool\u2011send operation performs the insecure deserialization that is at the core of this issue.\n\n### Solution\nUpdate to TYPO3 versions 10.4.55 ELTS, 11.5.49 ELTS, 12.4.41 LTS, 13.4.23 LTS, 14.0.2 that fix the problem described.\n\n### Credits\nThanks to Vitaly Simonovich for reporting this issue, and to TYPO3 security team members Elias H\u00e4u\u00dfler and Oliver Hader for fixing it.\n\n### References\n* [TYPO3-CORE-SA-2026-004](https://typo3.org/security/advisory/typo3-core-sa-2026-004)",
  "id": "GHSA-7vp9-x248-9vr9",
  "modified": "2026-01-13T21:54:06Z",
  "published": "2026-01-13T21:54:06Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/TYPO3/typo3/security/advisories/GHSA-7vp9-x248-9vr9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0859"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TYPO3/typo3/commit/3225d705080a1bde57a66689621c947da5a4782f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TYPO3/typo3/commit/722bf71c118b0a8e4f2c2494854437d846799a13"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TYPO3/typo3/commit/e0f0ceee480c203fbb60b87454f5f193e541d27f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/TYPO3/typo3"
    },
    {
      "type": "WEB",
      "url": "https://typo3.org/security/advisory/typo3-core-sa-2026-004"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "TYPO3 CMS Allows Insecure Deserialization via Mailer File Spool"
}

NCSC-2026-0018

Vulnerability from csaf_ncscnl - Published: 2026-01-16 10:11 - Updated: 2026-01-16 10:11

Summary

Kwetsbaarheden verholpen in TYPO3 CMS

Scope

4 vulnerabilities in this advisory, including CVE-2026-0859.

CVE-2026-0859

A vulnerability in TYPO3 allows local users with write access to execute arbitrary PHP code through insecure deserialization in multiple versions of TYPO3 when the mailer:spool:send command is executed.

7.8 (High)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Known affected: 2 products

Open the full advisory

WID-SEC-W-2026-0095

Vulnerability from csaf_certbund - Published: 2026-01-13 23:00 - Updated: 2026-01-13 23:00

Summary

TYPO3 Core: Mehrere Schwachstellen

Severity

Mittel

Scope

4 vulnerabilities in this advisory, including CVE-2026-0859.

CVE-2026-0859

Known affected: 5 products

Open the full advisory

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.

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.

Action not permitted

CVE-2026-0859 (GCVE-0-2026-0859)

CERTFR-2026-AVI-0037

Solutions

FKIE_CVE-2026-0859

GHSA-7VP9-X248-9VR9

Problem

Solution

Credits

References

NCSC-2026-0018

WID-SEC-W-2026-0095

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour