Vulnerability-Lookup

CVE-2026-49740 (GCVE-0-2026-49740)

Vulnerability from cvelistv5 – Published: 2026-06-09 10:53 – Updated: 2026-07-15 12:49

Title

TYPO3 CMS - Insecure Deserialization in Core API

Summary

TYPO3's cache frontend (VariableFrontend) and persistent key-value store (Registry) deserialized PHP payloads without integrity validation or class restrictions. An attacker with write access to the underlying storage backend (cache store or sys_registry database table) could inject a crafted serialized payload to trigger PHP Object Injection, potentially exploiting a gadget chain to achieve Remote Code Execution or other high-impact effects. Exploiting this vulnerability requires direct local write access to the storage, such as the SQL database or file system. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.

Severity

6.3 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/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 2026-06-09 13:40 UTC

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

TYPO3 mitre root

References

3 references

URL	Tags
https://typo3.org/security/advisory/typo3-core-sa…	vendor-advisory
https://github.com/TYPO3/typo3/commit/48bcf24f31f…	patch
https://github.com/TYPO3/typo3/commit/87cd7c5b710…	patch

Impacted products

1 product

Vendor	Product	Version	CPE status
TYPO3	TYPO3 CMS	Affected: 0 , < 10.4.57 (semver) Affected: 11.0.0 , < 11.5.51 (semver) Affected: 12.0.0 , < 12.4.46 (semver) Affected: 13.0.0 , < 13.4.31 (semver) Affected: 14.0.0 , < 14.3.3 (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

z3rco Chowdhury Faizal Ahammed Rick Larabee Vitaly Simonovich Nozomu Sasaki Mert Akdag tikket Shafi Almutairi Oliver Hader

Show details on NVD website

JSON

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This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-502\", \"description\": \"CWE-502 Deserialization of Untrusted Data\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.4.57\"}, {\"criteria\": \"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"11.5.51\", \"versionStartIncluding\": \"11.0.0\"}, {\"criteria\": \"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"12.4.46\", \"versionStartIncluding\": \"12.0.0\"}, {\"criteria\": \"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"13.4.31\", \"versionStartIncluding\": \"13.0.0\"}, {\"criteria\": \"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"14.3.3\", \"versionStartIncluding\": \"14.0.0\"}], \"operator\": \"OR\"}], \"operator\": \"OR\"}], \"providerMetadata\": {\"orgId\": \"f4fb688c-4412-4426-b4b8-421ecf27b14a\", \"shortName\": \"TYPO3\", \"dateUpdated\": \"2026-07-15T12:49:15.005Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-49740\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-15T12:49:15.005Z\", \"dateReserved\": \"2026-06-01T10:52:50.597Z\", \"assignerOrgId\": \"f4fb688c-4412-4426-b4b8-421ecf27b14a\", \"datePublished\": \"2026-06-09T10:53:55.777Z\", \"assignerShortName\": \"TYPO3\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

CERTFR-2026-AVI-0722

Vulnerability from certfr_avis - Published: 2026-06-10 - Updated: 2026-06-10

De multiples vulnérabilités ont été découvertes dans Typo3. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une élévation de privilèges et une atteinte à la confidentialité des données.

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 versions 14.x antérieures à 14.3.3
Typo3	Typo3	Typo3 versions antérieures à 10.4.57
Typo3	Typo3	Typo3 versions 12.x antérieures à 12.4.46
Typo3	Typo3	Typo3 versions 13.x antérieures à 13.4.31
Typo3	Typo3	Typo3 versions 11.x antérieures à 11.5.51

References

Title

Publication Time

FKIE_CVE-2026-49740

Vulnerability from fkie_nvd - Published: 2026-06-09 11:16 - Updated: 2026-07-23 08:10

Severity

6.3 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H

Summary

References

	URL	Tags
	f4fb688c-4412-4426-b4b8-421ecf27b14a	https://github.com/TYPO3/typo3/commit/48bcf24f31f52cc0b43d3bea4984634bd2cf85c7
	f4fb688c-4412-4426-b4b8-421ecf27b14a	https://github.com/TYPO3/typo3/commit/87cd7c5b710c44d3606fed277b040a75dc6a9c02
	f4fb688c-4412-4426-b4b8-421ecf27b14a	https://typo3.org/security/advisory/typo3-core-sa-2026-018

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://packagist.org",
          "defaultStatus": "unaffected",
          "modules": [
            "Core"
          ],
          "packageName": "typo3/cms-core",
          "product": "TYPO3 CMS",
          "repo": "https://github.com/TYPO3/typo3",
          "vendor": "TYPO3",
          "versions": [
            {
              "lessThan": "10.4.57",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "11.5.51",
              "status": "affected",
              "version": "11.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "12.4.46",
              "status": "affected",
              "version": "12.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "13.4.31",
              "status": "affected",
              "version": "13.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "14.3.3",
              "status": "affected",
              "version": "14.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "TYPO3\u0027s cache frontend (VariableFrontend) and persistent key-value store (Registry) deserialized PHP payloads without integrity validation or class restrictions. An attacker with write access to the underlying storage backend (cache store or sys_registry database table) could inject a crafted serialized payload to trigger PHP Object Injection, potentially exploiting a gadget chain to achieve Remote Code Execution or other high-impact effects. Exploiting this vulnerability requires direct local write access to the storage, such as the SQL database or file system. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2."
    },
    {
      "lang": "es",
      "value": "El frontend de cach\u00e9 de TYPO3 (VariableFrontend) y el almac\u00e9n persistente de clave-valor (Registry) deserializaban cargas \u00fatiles PHP sin validaci\u00f3n de integridad ni restricciones de clase. Un atacante con acceso de escritura al backend de almacenamiento subyacente (almac\u00e9n de cach\u00e9 o tabla de base de datos sys_registry) podr\u00eda inyectar una carga \u00fatil serializada manipulada para desencadenar una inyecci\u00f3n de objetos PHP, explotando potencialmente una cadena de gadgets para lograr la ejecuci\u00f3n remota de c\u00f3digo u otros efectos de alto impacto. Explotar esta vulnerabilidad requiere acceso de escritura local directo al almacenamiento, como la base de datos SQL o el sistema de archivos. Este problema afecta a las versiones de TYPO3 CMS anteriores a 10.4.57, 11.0.0-11.5.51, 12.0.0-12.4.46, 13.0.0-13.4.31 y 14.0.0-14.3.3."
    }
  ],
  "id": "CVE-2026-49740",
  "lastModified": "2026-07-23T08:10:00.137",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "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:N/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-49740",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-09T13:40:19.741208Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-09T11:16:53.380",
  "references": [
    {
      "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
      "url": "https://github.com/TYPO3/typo3/commit/48bcf24f31f52cc0b43d3bea4984634bd2cf85c7"
    },
    {
      "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
      "url": "https://github.com/TYPO3/typo3/commit/87cd7c5b710c44d3606fed277b040a75dc6a9c02"
    },
    {
      "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
      "url": "https://typo3.org/security/advisory/typo3-core-sa-2026-018"
    }
  ],
  "sourceIdentifier": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
      "type": "Secondary"
    }
  ]
}

GHSA-C78M-C52X-JGWP

Vulnerability from github – Published: 2026-06-12 19:09 – Updated: 2026-06-12 19:09

Summary

TYPO3 CMS has Insecure Deserialization via Core API

Details

Problem

TYPO3's cache frontend (VariableFrontend) and persistent key-value store (Registry) deserialized PHP payloads without integrity validation or class restrictions. An attacker with write access to the underlying storage backend (cache store or sys_registry database table) could inject a crafted serialized payload to trigger PHP Object Injection, potentially exploiting a gadget chain to achieve Remote Code Execution or other high-impact effects.

Exploiting this vulnerability requires direct local write access to the storage, such as the SQL database or file system.

Solution

Update to TYPO3 versions 10.4.57 ELTS, 11.5.51 ELTS, 12.4.46 ELTS, 13.4.31 LTS, 14.3.3 LTS that fix the problem described.

Credits

TYPO3 CMS thanks “z3rco”, Chowdhury Faizal Ahammed, Rick Larabee, Vitaly Simonovich, Nozomu Sasaki, Mert Akdag, “tikket”, Shafi Almutairi for reporting this issue, and to TYPO3 core & security team member Oliver Hader for fixing it.

Resources

TYPO3-CORE-SA-2026-018

Severity

6.3 (Medium)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/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": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "typo3/cms-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "10.4.57"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "typo3/cms-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "11.0.0"
            },
            {
              "fixed": "11.5.51"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "typo3/cms-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "12.0.0"
            },
            {
              "fixed": "12.4.46"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "typo3/cms-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "13.0.0"
            },
            {
              "fixed": "13.4.31"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "typo3/cms-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "14.0.0"
            },
            {
              "fixed": "14.3.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-49740"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-12T19:09:26Z",
    "nvd_published_at": "2026-06-09T11:16:53Z",
    "severity": "MODERATE"
  },
  "details": "### Problem\nTYPO3\u0027s cache frontend (`VariableFrontend`) and persistent key-value store (`Registry`) deserialized PHP payloads without integrity validation or class restrictions. An attacker with write access to the underlying storage backend (cache store or sys_registry database table) could inject a crafted serialized payload to trigger PHP Object Injection, potentially exploiting a gadget chain to achieve Remote Code Execution or other high-impact effects.\n\nExploiting this vulnerability requires direct local write access to the storage, such as the SQL database or file system.\n\n### Solution\nUpdate to TYPO3 versions 10.4.57 ELTS, 11.5.51 ELTS, 12.4.46 ELTS, 13.4.31 LTS, 14.3.3 LTS that fix the problem described.\n\n### Credits\nTYPO3 CMS thanks \u201cz3rco\u201d, Chowdhury Faizal Ahammed, Rick Larabee, Vitaly Simonovich, Nozomu Sasaki, Mert Akdag, \u201ctikket\u201d, Shafi Almutairi for reporting this issue, and to TYPO3 core \u0026 security team member Oliver Hader for fixing it.\n\n### Resources\n* [TYPO3-CORE-SA-2026-018](https://typo3.org/security/advisory/typo3-core-sa-2026-018)",
  "id": "GHSA-c78m-c52x-jgwp",
  "modified": "2026-06-12T19:09:27Z",
  "published": "2026-06-12T19:09:26Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/TYPO3/typo3/security/advisories/GHSA-c78m-c52x-jgwp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49740"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TYPO3/typo3/commit/48bcf24f31f52cc0b43d3bea4984634bd2cf85c7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TYPO3/typo3/commit/87cd7c5b710c44d3606fed277b040a75dc6a9c02"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2026-49740.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/TYPO3/typo3"
    },
    {
      "type": "WEB",
      "url": "https://typo3.org/security/advisory/typo3-core-sa-2026-018"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "TYPO3 CMS has Insecure Deserialization via Core API"
}

WID-SEC-W-2026-1835

Vulnerability from csaf_certbund - Published: 2026-06-08 22:00 - Updated: 2026-06-09 22:00

Summary

TYPO3 Core: Mehrere Schwachstellen

Severity

Hoch

Scope

15 vulnerabilities in this advisory, including CVE-2026-49740.

CVE-2026-49740

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.

Detection rules are retrieved from Rulezet.

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-2026-49740 (GCVE-0-2026-49740)

CERTFR-2026-AVI-0722

Solutions

FKIE_CVE-2026-49740

GHSA-C78M-C52X-JGWP

Problem

Solution

Credits

Resources

WID-SEC-W-2026-1835

Tags

Sightings

Nomenclature

Related by attack behaviour