Vulnerability-Lookup

GHSA-GGFF-9MJ3-7246

Vulnerability from github – Published: 2026-01-21 15:47 – Updated: 2026-01-22 15:52

Summary

mailqueue TYPO3 extension affected by Insecure Deserialization in QueueableFileTransport

Details

Description

The extension extends TYPO3’s FileSpool component, which was vulnerable to Insecure Deserialization prior to TYPO3-CORE-SA-2026-004. Since the related fix is overwritten by the extension, using the extension with a patched TYPO3 core version still allows for Insecure Deserialization, because the affected vulnerable code was extracted from TYPO3 core to the extension.

More information about this vulnerability can be found in the related TYPO3 Core Security Advisory TYPO3-CORE-SA-2026-004.

References

TYPO3-EXT-SA-2026-001
https://github.com/CPS-IT/mailqueue/commit/fd09aa4e1a751551bae4b228bee814e22f2048db
https://github.com/CPS-IT/mailqueue/commit/12a0a35027bb5609917790a94e43bbf117abf733

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": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "cpsit/typo3-mailqueue"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.4.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "cpsit/typo3-mailqueue"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.5.0"
            },
            {
              "fixed": "0.5.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-0895"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-21T15:47:44Z",
    "nvd_published_at": "2026-01-20T08:16:01Z",
    "severity": "MODERATE"
  },
  "details": "## Description\n\nThe extension extends TYPO3\u2019s FileSpool component, which was vulnerable to Insecure Deserialization prior to [TYPO3-CORE-SA-2026-004](https://typo3.org/security/advisory/typo3-core-sa-2026-004). Since the related fix is overwritten by the extension, using the extension with a patched TYPO3 core version still allows for Insecure Deserialization, because the affected vulnerable code was extracted from TYPO3 core to the extension.\n\nMore information about this vulnerability can be found in the related TYPO3 Core Security Advisory [TYPO3-CORE-SA-2026-004](https://typo3.org/security/advisory/typo3-core-sa-2026-004).\n\n## References\n\n* [TYPO3-EXT-SA-2026-001](https://typo3.org/security/advisory/typo3-ext-sa-2026-001)\n* https://github.com/CPS-IT/mailqueue/commit/fd09aa4e1a751551bae4b228bee814e22f2048db\n* https://github.com/CPS-IT/mailqueue/commit/12a0a35027bb5609917790a94e43bbf117abf733",
  "id": "GHSA-ggff-9mj3-7246",
  "modified": "2026-01-22T15:52:09Z",
  "published": "2026-01-21T15:47:44Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/CPS-IT/mailqueue/security/advisories/GHSA-ggff-9mj3-7246"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0895"
    },
    {
      "type": "WEB",
      "url": "https://github.com/CPS-IT/mailqueue/commit/12a0a35027bb5609917790a94e43bbf117abf733"
    },
    {
      "type": "WEB",
      "url": "https://github.com/CPS-IT/mailqueue/commit/fd09aa4e1a751551bae4b228bee814e22f2048db"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/CPS-IT/mailqueue"
    },
    {
      "type": "WEB",
      "url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-001"
    }
  ],
  "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": "mailqueue TYPO3 extension affected by Insecure Deserialization in QueueableFileTransport"
}

CVE-2026-0895 (GCVE-0-2026-0895)

Vulnerability from cvelistv5 – Published: 2026-01-20 07:19 – Updated: 2026-01-20 18:07

Title

Insecure Deserialization in extension "Mailqueue" (mailqueue)

Summary

The extension extends TYPO3’ FileSpool component, which was vulnerable to Insecure Deserialization prior to TYPO3-CORE-SA-2026-004 https://typo3.org/security/advisory/typo3-core-sa-2026-004 . Since the related fix is overwritten by the extension, using the extension with a patched TYPO3 core version still allows for Insecure Deserialization, because the affected vulnerable code was extracted from TYPO3 core to the extension. More information about this vulnerability can be found in the related TYPO3 Core Security Advisory TYPO3-CORE-SA-2026-004 https://typo3.org/security/advisory/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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-20 17:56 UTC

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

TYPO3 mitre root

References

3 references

URL	Tags
https://typo3.org/security/advisory/typo3-ext-sa-…	vendor-advisory
https://github.com/CPS-IT/mailqueue/commit/fd09aa…	patch
https://github.com/CPS-IT/mailqueue/commit/12a0a3…	patch

Impacted products

1 product

Vendor	Product	Version
TYPO3	Extension "Mailqueue"	Affected: 0 , < 0.4.3 (semver) Affected: 0.5.0 , < 0.5.1 (semver)

Date Public

2026-01-20 07:00

Credits

Elias Häußler Elias Häußler

Show details on NVD website

JSON

To clipboard

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  "containers": {
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        "metrics": [
          {
            "other": {
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                "id": "CVE-2026-0895",
                "options": [
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                  },
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                  }
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                "role": "CISA Coordinator",
                "timestamp": "2026-01-20T17:56:49.546112Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "collectionURL": "https://packagist.org/",
          "defaultStatus": "unaffected",
          "packageName": "cpsit/typo3-mailqueue",
          "product": "Extension \"Mailqueue\"",
          "repo": "https://github.com/CPS-IT/mailqueue",
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      "credits": [
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          "lang": "en",
          "type": "reporter",
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      "datePublic": "2026-01-20T07:00:00.000Z",
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            }
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      "metrics": [
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            "subConfidentialityImpact": "HIGH",
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}

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

GHSA-GGFF-9MJ3-7246

Description

References

CVE-2026-0895 (GCVE-0-2026-0895)

Tags

Sightings

Nomenclature

Related by attack behaviour