Vulnerability-Lookup

CVE-2026-79994 (GCVE-0-2026-79994)

Vulnerability from cvelistv5 – Published: 2026-09-15 20:33 – Updated: 2026-09-16 17:57

Title

Docker Sandboxes UDS forwarder can reach arbitrary host Unix sockets through a symlink race

Summary

The guest-to-host Unix-domain socket relay in Docker Sandboxes validates that a socket path is inside an authorized workspace, but later reconnects using the pathname. A malicious guest can replace an intermediate directory with a symlink between validation and connection, causing the host to connect to an arbitrary AF_UNIX socket outside the shared workspace. This can expose data or host-side capabilities provided by the targeted socket.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-16 17:56 UTC

CWE

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Assigner

Docker mitre root

References

5 references

URL	Tags
https://docs.docker.com/ai/sandboxes/	product
https://docs.docker.com/ai/sandboxes/security/iso…	product
https://github.com/docker/sailor/pull/2021	patch
https://github.com/docker/sandboxes/pull/5342	patch
https://github.com/docker/sbx-releases/releases/t…	release-notes

Impacted products

1 product

Vendor	Product	Version	CPE status
Docker	Docker Sandboxes	Affected: 0.37.0 , < 0.42.0 (semver) cpe:2.3:a:docker:docker_sandboxes::::::::

Credits

Jurre van Bergen of ThreatNotify

Show details on NVD website

JSON

To clipboard

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CERTFR-2026-AVI-1189

Vulnerability from certfr_avis - Published: 2026-09-16 - Updated: 2026-09-16

De multiples vulnérabilités ont été découvertes dans Docker. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une atteinte à la confidentialité des données et une atteinte à l'intégrité 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
	Docker	Docker	Docker Sandboxes versions antérieures à 0.42.0

References

Title

Publication Time

FKIE_CVE-2026-79994

Vulnerability from fkie_nvd - Published: 2026-09-15 21:16 - Updated: 2026-09-16 20:38

Severity

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

Summary

References

	URL	Tags
	security@docker.com	https://docs.docker.com/ai/sandboxes/
	security@docker.com	https://docs.docker.com/ai/sandboxes/security/isolation/
	security@docker.com	https://github.com/docker/sailor/pull/2021
	security@docker.com	https://github.com/docker/sandboxes/pull/5342
	security@docker.com	https://github.com/docker/sbx-releases/releases/tag/v0.42.0

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "product": "Docker Sandboxes",
          "vendor": "Docker",
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    }
  ],
  "id": "CVE-2026-79994",
  "lastModified": "2026-09-16T20:38:33.883",
  "metrics": {
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          "attackRequirements": "PRESENT",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "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",
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            },
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  "references": [
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      "url": "https://github.com/docker/sandboxes/pull/5342"
    },
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      "url": "https://github.com/docker/sbx-releases/releases/tag/v0.42.0"
    }
  ],
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  "vulnStatus": "Awaiting Analysis",
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}

GHSA-WQ46-97V9-Q386

Vulnerability from github – Published: 2026-09-15 21:33 – Updated: 2026-09-16 00:31

Details

Severity

8.7 (High)


                  
                    CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-79994"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-367"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-15T21:16:42Z",
    "severity": "HIGH"
  },
  "details": "The guest-to-host Unix-domain socket relay in Docker Sandboxes validates that a socket path is inside an authorized workspace, but later reconnects using the pathname. A malicious guest can replace an intermediate directory with a symlink between validation and connection, causing the host to connect to an arbitrary AF_UNIX socket outside the shared workspace. This can expose data or host-side capabilities provided by the targeted socket.",
  "id": "GHSA-wq46-97v9-q386",
  "modified": "2026-09-16T00:31:27Z",
  "published": "2026-09-15T21:33:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-79994"
    },
    {
      "type": "WEB",
      "url": "https://github.com/docker/sailor/pull/2021"
    },
    {
      "type": "WEB",
      "url": "https://github.com/docker/sandboxes/pull/5342"
    },
    {
      "type": "WEB",
      "url": "https://docs.docker.com/ai/sandboxes"
    },
    {
      "type": "WEB",
      "url": "https://docs.docker.com/ai/sandboxes/security/isolation"
    },
    {
      "type": "WEB",
      "url": "https://github.com/docker/sbx-releases/releases/tag/v0.41.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/docker/sbx-releases/releases/tag/v0.42.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/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",
      "type": "CVSS_V4"
    }
  ]
}

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-2026-79994 (GCVE-0-2026-79994)

CERTFR-2026-AVI-1189

Solutions

FKIE_CVE-2026-79994

GHSA-WQ46-97V9-Q386

Tags

Sightings

Nomenclature

Related by attack behaviour