Vulnerability-Lookup

RHSA-2026:51065

Vulnerability from csaf_redhat - Published: 2026-08-06 11:34 - Updated: 2026-09-12 05:46

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Severity

Important

Notes

Topic: An update for Red Hat Hardened Images RPMs is now available.

Details: This update includes the following RPMs: buildah: * buildah-1.45.0-2.hum1 (aarch64, x86_64) * buildah-1.45.0-2.hum1.src (src) Security Fix(es): buildah: * CVE-2026-15788 * CVE-2026-56852

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-15788

A flaw was found in BuildKit. An untrusted user, when authoring a build on a Windows Container on Windows (WCOW) configured BuildKit daemon, can exploit a vulnerability in the cache mount source selector. This flaw allows the user to read arbitrary files from the host system, leading to information disclosure.

6.3 (Medium)


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

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected products

Fixed 3 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:buildah-main@aarch64	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:buildah-main@src	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:buildah-main@x86_64	—	Vendor Fix fix

Threats

Impact Moderate

CVE-2026-56852

A flaw was found in golang.org/x/text. The norm.Iter component can enter an infinite loop when processing input that contains invalid UTF-8 (Unicode Transformation Format - 8-bit) bytes. A remote attacker could exploit this vulnerability by providing specially crafted input, leading to a Denial of Service (DoS) condition where the affected application becomes unresponsive.

7.5 (High)


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

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Affected products

Fixed 3 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:buildah-main@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:buildah-main@src	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:buildah-main@x86_64	—	Vendor Fix fix Workaround

Threats

Impact Important

CVE-2026-75593

A flaw was found in BuildKit, a toolkit for converting source code to build artifacts. A malicious client with valid permissions to access the BuildKit control API can craft a special upload request. This request allows files to escape from the BuildKit-controlled state directory, potentially leading to unauthorized modification or deletion of files on the system.

6.5 (Medium)


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

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected products

Fixed 3 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:buildah-main@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:buildah-main@src	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:buildah-main@x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

References

25 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:51065	self
https://access.redhat.com/security/cve/CVE-2026-15788	external
https://access.redhat.com/security/cve/CVE-2026-56852	external
https://access.redhat.com/security/updates/classi…	external
https://images.redhat.com/	external
https://access.redhat.com/security/cve/CVE-2026-75593	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-15788	self
https://bugzilla.redhat.com/show_bug.cgi?id=2502989	external
https://www.cve.org/CVERecord?id=CVE-2026-15788	external
https://nvd.nist.gov/vuln/detail/CVE-2026-15788	external
https://github.com/moby/buildkit/security/advisor…	external
https://access.redhat.com/security/cve/CVE-2026-56852	self
https://bugzilla.redhat.com/show_bug.cgi?id=2504233	external
https://www.cve.org/CVERecord?id=CVE-2026-56852	external
https://nvd.nist.gov/vuln/detail/CVE-2026-56852	external
https://go.dev/cl/794100	external
https://go.dev/issue/80142	external
https://pkg.go.dev/vuln/GO-2026-5970	external
https://access.redhat.com/security/cve/CVE-2026-75593	self
https://bugzilla.redhat.com/show_bug.cgi?id=2519913	external
https://www.cve.org/CVERecord?id=CVE-2026-75593	external
https://nvd.nist.gov/vuln/detail/CVE-2026-75593	external
https://github.com/moby/buildkit/releases/tag/v0.31.2	external
https://github.com/moby/buildkit/security/advisor…	external

JSON

To clipboard

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          "title": "Vulnerability description"
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          "title": "Vulnerability description"
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          "text": "Important: This flaw in the `golang.org/x/text` library can lead to a denial of service. An attacker could provide specially crafted invalid UTF-8 input to an application using the affected `norm.Iter` functionality, causing it to enter an infinite loop and become unresponsive.",
          "title": "Statement"
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      },
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          "text": "A flaw was found in BuildKit, a toolkit for converting source code to build artifacts. A malicious client with valid permissions to access the BuildKit control API can craft a special upload request. This request allows files to escape from the BuildKit-controlled state directory, potentially leading to unauthorized modification or deletion of files on the system.",
          "title": "Vulnerability description"
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        {
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          "text": "github.com/moby/buildkit: BuildKit: File escape vulnerability allows unauthorized file modification",
          "title": "Vulnerability summary"
        },
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          "category": "other",
          "text": "A flaw in BuildKit allows a client with valid permissions to the BuildKit control API to perform unauthorized file modifications outside the intended build state directory. This issue is limited to authenticated clients, reducing the overall attack surface.",
          "title": "Statement"
        },
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          "title": "CVSS score applicability"
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      "product_status": {
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-75593"
        },
        {
          "category": "external",
          "summary": "RHBZ#2519913",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2519913"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-75593",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-75593"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-75593",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-75593"
        },
        {
          "category": "external",
          "summary": "https://github.com/moby/buildkit/releases/tag/v0.31.2",
          "url": "https://github.com/moby/buildkit/releases/tag/v0.31.2"
        },
        {
          "category": "external",
          "summary": "https://github.com/moby/buildkit/security/advisories/GHSA-g2h8-426c-7976",
          "url": "https://github.com/moby/buildkit/security/advisories/GHSA-g2h8-426c-7976"
        }
      ],
      "release_date": "2026-08-19T20:06:54.924000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-06T11:34:17+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:buildah-main@aarch64",
            "Red Hat Hardened Images:buildah-main@src",
            "Red Hat Hardened Images:buildah-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:51065"
        },
        {
          "category": "workaround",
          "details": "Restrict access to the BuildKit control API to only trusted users and services. Implement robust authentication and authorization policies for all clients interacting with the BuildKit daemon to prevent unauthorized access and potential file system escapes.",
          "product_ids": [
            "Red Hat Hardened Images:buildah-main@aarch64",
            "Red Hat Hardened Images:buildah-main@src",
            "Red Hat Hardened Images:buildah-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:buildah-main@aarch64",
            "Red Hat Hardened Images:buildah-main@src",
            "Red Hat Hardened Images:buildah-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "github.com/moby/buildkit: BuildKit: File escape vulnerability allows unauthorized file modification"
    }
  ]
}

CVE-2026-15788 (GCVE-0-2026-15788)

Vulnerability from cvelistv5 – Published: 2026-07-20 19:12 – Updated: 2026-07-21 12:40

Title

WCOW cache mount source selector resolves NTFS junctions outside of cache root

Summary

BuildKit's cache mount source= selector on Windows Container on Windows (WCOW) workers does not detect NTFS directory junctions placed inside the cache root. A build authored by an untrusted user on a WCOW-configured BuildKit daemon can read arbitrary host files reachable to the BuildKit daemon process.

Severity

5.6 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-21 12:40 UTC

CWE

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Assigner

Docker mitre root

References

1 reference

URL	Tags
https://github.com/moby/buildkit/security/advisor…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
moby	BuildKit	Affected: 0 , < 0.31.2 (semver)

Credits

Junyi Liu (mosskappa)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-15788",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-21T12:40:15.680950Z",
                "version": "2.0.3"
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              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-21T12:40:56.055Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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              "versionType": "semver"
            }
          ]
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        {
          "lang": "en",
          "type": "finder",
          "value": "Junyi Liu (mosskappa)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "BuildKit\u0027s cache mount \u003ccode\u003esource=\u003c/code\u003e selector on Windows Container on Windows (WCOW) workers does not detect NTFS directory junctions placed inside the cache root. A build authored by an untrusted user on a WCOW-configured BuildKit daemon can read arbitrary host files reachable to the BuildKit daemon process."
            }
          ],
          "value": "BuildKit\u0027s cache mount source= selector on Windows Container on Windows (WCOW) workers does not detect NTFS directory junctions placed inside the cache root. A build authored by an untrusted user on a WCOW-configured BuildKit daemon can read arbitrary host files reachable to the BuildKit daemon process."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-132",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-132 Symlink Attack"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "LOCAL",
            "baseScore": 5.6,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-59",
              "description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-20T19:12:56.386Z",
        "orgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e",
        "shortName": "Docker"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/moby/buildkit/security/advisories/GHSA-388v-wmr2-g2v2"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "WCOW cache mount source selector resolves NTFS junctions outside of cache root",
      "workarounds": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Use trusted build sources."
            }
          ],
          "value": "Use trusted build sources."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e",
    "assignerShortName": "Docker",
    "cveId": "CVE-2026-15788",
    "datePublished": "2026-07-20T19:12:56.386Z",
    "dateReserved": "2026-07-14T19:25:38.521Z",
    "dateUpdated": "2026-07-21T12:40:56.055Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-56852 (GCVE-0-2026-56852)

Vulnerability from cvelistv5 – Published: 2026-07-21 19:18 – Updated: 2026-08-10 22:57

Title

Infinite loop on invalid input in golang.org/x/text

Summary

A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-23 13:26 UTC

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

Go Google root

References

3 references

URL	Tags
https://go.dev/issue/80142
https://go.dev/cl/794100
https://pkg.go.dev/vuln/GO-2026-5970

Impacted products

1 product

Vendor	Product	Version
golang.org/x/text	golang.org/x/text/unicode/norm	Affected: 0 , < 0.39.0 (semver)

Credits

Viky Choi ("vikychoi" on GitHub)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-56852",
                "options": [
                  {
                    "Exploitation": "none"
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2026-07-23T13:26:14.918983Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-835",
                "description": "CWE-835 Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-23T13:26:20.232Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "golang.org/x/text/unicode/norm",
          "product": "golang.org/x/text/unicode/norm",
          "programRoutines": [
            {
              "name": "nextComposed"
            },
            {
              "name": "Form.Append"
            },
            {
              "name": "Form.AppendString"
            },
            {
              "name": "Form.Bytes"
            },
            {
              "name": "Form.FirstBoundary"
            },
            {
              "name": "Form.FirstBoundaryInString"
            },
            {
              "name": "Form.IsNormal"
            },
            {
              "name": "Form.IsNormalString"
            },
            {
              "name": "Form.LastBoundary"
            },
            {
              "name": "Form.NextBoundary"
            },
            {
              "name": "Form.NextBoundaryInString"
            },
            {
              "name": "Form.Properties"
            },
            {
              "name": "Form.PropertiesString"
            },
            {
              "name": "Form.QuickSpan"
            },
            {
              "name": "Form.QuickSpanString"
            },
            {
              "name": "Form.Span"
            },
            {
              "name": "Form.SpanString"
            },
            {
              "name": "Form.String"
            },
            {
              "name": "Form.Transform"
            },
            {
              "name": "Iter.Init"
            },
            {
              "name": "Iter.InitString"
            },
            {
              "name": "Iter.Next"
            },
            {
              "name": "Iter.Seek"
            },
            {
              "name": "normReader.Read"
            },
            {
              "name": "normWriter.Write"
            }
          ],
          "vendor": "golang.org/x/text",
          "versions": [
            {
              "lessThan": "0.39.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Viky Choi (\"vikychoi\" on GitHub)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-835: Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-10T22:57:54.703Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
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          "url": "https://go.dev/issue/80142"
        },
        {
          "url": "https://go.dev/cl/794100"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-5970"
        }
      ],
      "title": "Infinite loop on invalid input in golang.org/x/text"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2026-56852",
    "datePublished": "2026-07-21T19:18:59.951Z",
    "dateReserved": "2026-06-23T15:10:49.352Z",
    "dateUpdated": "2026-08-10T22:57:54.703Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-75593 (GCVE-0-2026-75593)

Vulnerability from cvelistv5 – Published: 2026-08-19 20:06 – Updated: 2026-08-25 14:02

Title

BuildKit: Malicious client can bypass destination directory validation on local sources upload

Summary

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.2, a custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory. The client needs to have valid permissions to access BuildKit control API to issue builds, eg., bypass authentication, etc. This issue is fixed in version 0.31.2.

Severity

7.2 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-25 14:02 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/moby/buildkit/security/advisor…	x_refsource_CONFIRM
https://github.com/moby/buildkit/releases/tag/v0.31.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
moby	buildkit	Affected: < 0.31.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-75593",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-25T14:02:16.589697Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-25T14:02:29.264Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "product": "buildkit",
          "vendor": "moby",
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            {
              "status": "affected",
              "version": "\u003c 0.31.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.2, a custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory. The client needs to have valid permissions to access BuildKit control API to issue builds, eg., bypass authentication, etc. This issue is fixed in version 0.31.2."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
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          }
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              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T20:06:54.924Z",
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      },
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        "discovery": "UNKNOWN"
      },
      "title": "BuildKit: Malicious client can bypass destination directory validation on local sources upload"
    }
  },
  "cveMetadata": {
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

RHSA-2026:51065

CVE-2026-15788 (GCVE-0-2026-15788)

CVE-2026-56852 (GCVE-0-2026-56852)

CVE-2026-75593 (GCVE-0-2026-75593)

Tags

Sightings

Nomenclature