Vulnerability-Lookup

CVE-2026-78122 (GCVE-0-2026-78122)

Vulnerability from cvelistv5 – Published: 2026-08-22 23:06 – Updated: 2026-08-29 11:47

Title

docker-socket-proxy through 0.5.0 Insufficient Access Control Granularity Exposes Container Filesystems

Summary

docker-socket-proxy fails to properly gate read endpoints in the /containers Docker API namespace when the CONTAINERS environment variable is set. Attackers can use GET requests to /containers/{id}/archive, /containers/{id}/export, /containers/{id}/logs, and /containers/{id}/top to read arbitrary files and download entire container filesystems as tar archives.

Severity

8.3 (High)


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

7.4 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-26 17:55 UTC

CWE

CWE-1220 - Insufficient Granularity of Access Control

Assigner

VulnCheck mitre root

References

6 references

URL	Tags
https://github.com/Tecnativa/docker-socket-proxy/…	issue-tracking
https://github.com/Tecnativa/docker-socket-proxy	product
https://github.com/Tecnativa/docker-socket-proxy/…	technical-description
https://github.com/Tecnativa/docker-socket-proxy/…	issue-trackingpatch
https://gist.github.com/nedlir/e4f52f88a757f02c67…	exploit
https://www.vulncheck.com/advisories/docker-socke…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
Tecnativa	docker-socket-proxy	Affected: 0 , ≤ 0.5.0 (semver)	guessed

Date Public

2026-08-15 00:00

Credits

nedlir

Show details on NVD website

JSON

To clipboard

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  "containers": {
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                "id": "CVE-2026-78122",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
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                    "Automatable": "no"
                  },
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                    "Technical Impact": "partial"
                  }
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                "role": "CISA Coordinator",
                "timestamp": "2026-08-26T17:55:36.477479Z",
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}

FKIE_CVE-2026-78122

Vulnerability from fkie_nvd - Published: 2026-08-22 23:16 - Updated: 2026-08-26 18:17

Severity

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

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://gist.github.com/nedlir/e4f52f88a757f02c67db1fd5dd70d732
	disclosure@vulncheck.com	https://github.com/Tecnativa/docker-socket-proxy
	disclosure@vulncheck.com	https://github.com/Tecnativa/docker-socket-proxy/blob/v0.5.0/haproxy.cfg#L49-L61
	disclosure@vulncheck.com	https://github.com/Tecnativa/docker-socket-proxy/issues/182
	disclosure@vulncheck.com	https://github.com/Tecnativa/docker-socket-proxy/pull/183
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/docker-socket-proxy-through-insufficient-access-control-granularity-exposes-container-filesystems
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/Tecnativa/docker-socket-proxy/issues/182

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://hub.docker.com/r/tecnativa/docker-socket-proxy",
          "defaultStatus": "unaffected",
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  "lastModified": "2026-08-26T18:17:04.487",
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          "confidentialityImpact": "HIGH",
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          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
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    "cvssMetricV40": [
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          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
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          "availabilityRequirement": "NOT_DEFINED",
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          "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",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
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          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
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        "type": "Secondary"
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    "ssvcV203": [
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    {
      "source": "disclosure@vulncheck.com",
      "url": "https://gist.github.com/nedlir/e4f52f88a757f02c67db1fd5dd70d732"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/Tecnativa/docker-socket-proxy"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/Tecnativa/docker-socket-proxy/blob/v0.5.0/haproxy.cfg#L49-L61"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/Tecnativa/docker-socket-proxy/issues/182"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/Tecnativa/docker-socket-proxy/pull/183"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/docker-socket-proxy-through-insufficient-access-control-granularity-exposes-container-filesystems"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/Tecnativa/docker-socket-proxy/issues/182"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1220"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-GXMJ-GJP2-H2MV

Vulnerability from github – Published: 2026-08-23 00:30 – Updated: 2026-08-23 00:30

Details

Severity

7.4 (High)


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

8.3 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-78122"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1220"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-22T23:16:22Z",
    "severity": "HIGH"
  },
  "details": "docker-socket-proxy fails to properly gate read endpoints in the /containers Docker API namespace when the CONTAINERS environment variable is set. Attackers can use GET requests to /containers/{id}/archive, /containers/{id}/export, /containers/{id}/logs, and /containers/{id}/top to read arbitrary files and download entire container filesystems as tar archives.",
  "id": "GHSA-gxmj-gjp2-h2mv",
  "modified": "2026-08-23T00:30:22Z",
  "published": "2026-08-23T00:30:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-78122"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Tecnativa/docker-socket-proxy/issues/182"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Tecnativa/docker-socket-proxy/pull/183"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/nedlir/e4f52f88a757f02c67db1fd5dd70d732"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Tecnativa/docker-socket-proxy"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Tecnativa/docker-socket-proxy/blob/v0.5.0/haproxy.cfg#L49-L61"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/docker-socket-proxy-through-insufficient-access-control-granularity-exposes-container-filesystems"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/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-2026-78122 (GCVE-0-2026-78122)

FKIE_CVE-2026-78122

GHSA-GXMJ-GJP2-H2MV

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Sightings

Nomenclature

Related by attack behaviour