Vulnerability-Lookup

RHSA-2026:62771

Vulnerability from csaf_redhat - Published: 2026-09-02 17:19 - Updated: 2026-11-07 05:54

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Moderate

Notes

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

Details: This update includes the following RPMs: podman: * podman-6.0.2-2.3.hum1 (aarch64, x86_64) * podman-docker-6.0.2-2.3.hum1 (noarch) * podman-machine-6.0.2-2.3.hum1 (aarch64, x86_64) * podman-remote-6.0.2-2.3.hum1 (aarch64, x86_64) * podmansh-6.0.2-2.3.hum1 (aarch64, x86_64) * podman-6.0.2-2.3.hum1.src (src)

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-2026-15789

A flaw was found in BuildKit. A custom client with valid permissions to access the BuildKit control API can produce an upload request that allows files to escape from the BuildKit-controlled state directory. This could lead to unauthorized modification or disclosure of sensitive data.

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

Affected products

Fixed 11 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:podman-5:6.0.2-2.3.hum1@aarch64	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:podman-5:6.0.2-2.3.hum1@src	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:podman-5:6.0.2-2.3.hum1@x86_64	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:podman-docker-5:6.0.2-2.3.hum1@noarch@public-hummingbird-aarch64-rpms	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:podman-docker-5:6.0.2-2.3.hum1@noarch@public-hummingbird-x86_64-rpms	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:podman-machine-5:6.0.2-2.3.hum1@aarch64	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:podman-machine-5:6.0.2-2.3.hum1@x86_64	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:podman-remote-5:6.0.2-2.3.hum1@aarch64	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:podman-remote-5:6.0.2-2.3.hum1@x86_64	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:podmansh-5:6.0.2-2.3.hum1@aarch64	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:podmansh-5:6.0.2-2.3.hum1@x86_64	—	Vendor Fix fix

Threats

Impact Moderate

References

10 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:62771	self
https://images.redhat.com/	external
https://access.redhat.com/security/cve/CVE-2026-15789	external
https://access.redhat.com/security/updates/classi…	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-15789	self
https://bugzilla.redhat.com/show_bug.cgi?id=2503742	external
https://www.cve.org/CVERecord?id=CVE-2026-15789	external
https://nvd.nist.gov/vuln/detail/CVE-2026-15789	external
https://github.com/moby/buildkit/security/advisor…	external

JSON

To clipboard

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  "vulnerabilities": [
    {
      "cve": "CVE-2026-15789",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory"
      },
      "discovery_date": "2026-07-21T17:01:36.777697+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2503742"
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      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in BuildKit. A custom client with valid permissions to access the BuildKit control API can produce an upload request that allows files to escape from the BuildKit-controlled state directory. This could lead to unauthorized modification or disclosure of sensitive data.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "buildkit: github.com/moby/buildkit: BuildKit: File escape vulnerability",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This Moderate impact flaw in BuildKit allows a custom client with valid permissions to the BuildKit control API to escape files from the BuildKit-controlled state directory. This vulnerability requires an attacker to already possess the necessary access to the BuildKit daemon, limiting the attack surface to environments where the control API is exposed or compromised.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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          "Red Hat Hardened Images:podman-docker-5:6.0.2-2.3.hum1@noarch@public-hummingbird-x86_64-rpms",
          "Red Hat Hardened Images:podman-machine-5:6.0.2-2.3.hum1@aarch64",
          "Red Hat Hardened Images:podman-machine-5:6.0.2-2.3.hum1@x86_64",
          "Red Hat Hardened Images:podman-remote-5:6.0.2-2.3.hum1@aarch64",
          "Red Hat Hardened Images:podman-remote-5:6.0.2-2.3.hum1@x86_64",
          "Red Hat Hardened Images:podmansh-5:6.0.2-2.3.hum1@aarch64",
          "Red Hat Hardened Images:podmansh-5:6.0.2-2.3.hum1@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-15789"
        },
        {
          "category": "external",
          "summary": "RHBZ#2503742",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2503742"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-15789",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-15789"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-15789",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15789"
        },
        {
          "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": "2026-07-21T16:10:20.421000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-02T17:19:06+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:podman-5:6.0.2-2.3.hum1@aarch64",
            "Red Hat Hardened Images:podman-5:6.0.2-2.3.hum1@src",
            "Red Hat Hardened Images:podman-5:6.0.2-2.3.hum1@x86_64",
            "Red Hat Hardened Images:podman-docker-5:6.0.2-2.3.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:podman-docker-5:6.0.2-2.3.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:podman-machine-5:6.0.2-2.3.hum1@aarch64",
            "Red Hat Hardened Images:podman-machine-5:6.0.2-2.3.hum1@x86_64",
            "Red Hat Hardened Images:podman-remote-5:6.0.2-2.3.hum1@aarch64",
            "Red Hat Hardened Images:podman-remote-5:6.0.2-2.3.hum1@x86_64",
            "Red Hat Hardened Images:podmansh-5:6.0.2-2.3.hum1@aarch64",
            "Red Hat Hardened Images:podmansh-5:6.0.2-2.3.hum1@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:62771"
        }
      ],
      "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:podman-5:6.0.2-2.3.hum1@aarch64",
            "Red Hat Hardened Images:podman-5:6.0.2-2.3.hum1@src",
            "Red Hat Hardened Images:podman-5:6.0.2-2.3.hum1@x86_64",
            "Red Hat Hardened Images:podman-docker-5:6.0.2-2.3.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:podman-docker-5:6.0.2-2.3.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:podman-machine-5:6.0.2-2.3.hum1@aarch64",
            "Red Hat Hardened Images:podman-machine-5:6.0.2-2.3.hum1@x86_64",
            "Red Hat Hardened Images:podman-remote-5:6.0.2-2.3.hum1@aarch64",
            "Red Hat Hardened Images:podman-remote-5:6.0.2-2.3.hum1@x86_64",
            "Red Hat Hardened Images:podmansh-5:6.0.2-2.3.hum1@aarch64",
            "Red Hat Hardened Images:podmansh-5:6.0.2-2.3.hum1@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "buildkit: github.com/moby/buildkit: BuildKit: File escape vulnerability"
    }
  ]
}

CVE-2026-15789 (GCVE-0-2026-15789)

Vulnerability from cvelistv5 – Published: 2026-07-21 16:10 – Updated: 2026-07-21 17:13

Title

Malicious client can bypass destination directory validation on local sources upload

Summary

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 the BuildKit control API to issue builds, e.g., bypass authentication, etc.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/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 17:09 UTC

CWE

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

Assigner

Docker CNA under the mitre root

CNA scorecard B 88/100 over 42 records in the last 180 days details

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

Kris Kennaway (KrisKennawayDD) of Datadog

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-15789",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-21T17:09:31.474353Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2026-07-21T17:13:36.248Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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              "type": "text/html",
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          ],
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      "metrics": [
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            "Recovery": "NOT_DEFINED",
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            "exploitMaturity": "NOT_DEFINED",
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            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
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              "lang": "en",
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              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
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      "providerMetadata": {
        "dateUpdated": "2026-07-21T16:10:20.421Z",
        "orgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e",
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      },
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      "title": "Malicious client can bypass destination directory validation on local sources upload",
      "workarounds": [
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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.

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