Vulnerability-Lookup

GHSA-Q3FV-X8VG-QQM4

Vulnerability from github – Published: 2026-07-14 19:52 – Updated: 2026-07-14 19:52

Summary

Trivy: Helm chart tar bomb causes OOM via unbounded io.ReadAll in parser

Details

Summary

When Trivy scans a Helm chart archive (.tgz), its custom tar unpacker reads each entry with io.ReadAll(tr) and no size limit. An attacker who can place a malicious .tgz file in the scanned path can craft a small compressed archive that decompresses to gigabytes, causing the Trivy process to be killed by the OS OOM killer.

Affected configurations

Exploitation requires the attacker to place a crafted .tgz file in a location that Trivy will scan as a Helm chart. This applies to the following scan targets:

Command	Condition
`trivy config <dir>`	Directory contains a crafted `.tgz` Helm chart (misconfiguration scanning is always enabled)
`trivy filesystem --scanners misconf <dir>`	Directory contains a crafted `.tgz` Helm chart and `--scanners misconf` is explicitly enabled
`trivy image --scanners misconf <image>`	Image contains a crafted `.tgz` Helm chart and `--scanners misconf` is explicitly enabled

Realistic scenarios include: - A CI pipeline that runs trivy config . on a repository where a contributor can submit a pull request containing a crafted chart archive. - A pipeline that scans a container image with --scanners misconf, whose build context includes untrusted .tgz files.

Impact

An attacker who satisfies the conditions above can exhaust all available memory on the host running Trivy. The OS OOM killer will terminate the Trivy process and may affect other processes sharing the same host or CI runner.

The practical impact in CI environments is denial of service: the scan fails, the pipeline is blocked, and repeated submissions re-trigger the same condition. Cloud CI runners may also incur additional costs for consumed resources.

There is no impact on confidentiality or integrity of the scanned system.

Patches

Fixed in Trivy v0.71.0 (#10718). The custom tar unpacker was replaced with archive.LoadArchiveFiles from the official helm.sh/helm/v4 SDK, which enforces per-entry and total size limits and validates archive structure. Users should upgrade to v0.71.0 or later.

Workarounds

If upgrading is not immediately possible: - Set a memory limit (cgroup/container) on the Trivy process to bound the blast radius. - Use --skip-dirs to exclude directories containing untrusted Helm chart archives from the scan. - Avoid scanning repositories or images with untrusted .tgz files.

Credits

Reported by @jamesgol.

Severity

8.7 (High)


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

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/aquasecurity/trivy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.71.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-54448"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-770",
      "CWE-789"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-14T19:52:14Z",
    "nvd_published_at": "2026-06-25T17:16:41Z",
    "severity": "HIGH"
  },
  "details": "## Summary\n\nWhen Trivy scans a Helm chart archive (`.tgz`), its custom tar unpacker reads each entry with `io.ReadAll(tr)` and no size limit. An attacker who can place a malicious `.tgz` file in the scanned path can craft a small compressed archive that decompresses to gigabytes, causing the Trivy process to be killed by the OS OOM killer.\n\n## Affected configurations\n\nExploitation requires the attacker to place a crafted `.tgz` file in a location that Trivy will scan as a Helm chart. This applies to the following scan targets:\n\n| Command | Condition |\n| --- | --- |\n| `trivy config \u003cdir\u003e` | Directory contains a crafted `.tgz` Helm chart (misconfiguration scanning is always enabled) |\n| `trivy filesystem --scanners misconf \u003cdir\u003e` | Directory contains a crafted `.tgz` Helm chart **and** `--scanners misconf` is explicitly enabled |\n| `trivy image --scanners misconf \u003cimage\u003e` | Image contains a crafted `.tgz` Helm chart **and** `--scanners misconf` is explicitly enabled |\n\nRealistic scenarios include:\n- A CI pipeline that runs `trivy config .` on a repository where a contributor can submit a pull request containing a crafted chart archive.\n- A pipeline that scans a container image with `--scanners misconf`, whose build context includes untrusted `.tgz` files.\n\n## Impact\n\nAn attacker who satisfies the conditions above can exhaust all available memory on the host running Trivy. The OS OOM killer will terminate the Trivy process and may affect other processes sharing the same host or CI runner.\n\nThe practical impact in CI environments is denial of service: the scan fails, the pipeline is blocked, and repeated submissions re-trigger the same condition. Cloud CI runners may also incur additional costs for consumed resources.\n\nThere is no impact on confidentiality or integrity of the scanned system.\n\n## Patches\n\nFixed in Trivy `v0.71.0` (#10718). The custom tar unpacker was replaced with `archive.LoadArchiveFiles` from the official `helm.sh/helm/v4` SDK, which enforces per-entry and total size limits and validates archive structure. Users should upgrade to `v0.71.0` or later.\n\n## Workarounds\n\nIf upgrading is not immediately possible:\n- Set a memory limit (cgroup/container) on the Trivy process to bound the blast radius.\n- Use `--skip-dirs` to exclude directories containing untrusted Helm chart archives from the scan.\n- Avoid scanning repositories or images with untrusted `.tgz` files.\n\n## Credits\n\nReported by @jamesgol.",
  "id": "GHSA-q3fv-x8vg-qqm4",
  "modified": "2026-07-14T19:52:14Z",
  "published": "2026-07-14T19:52:14Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/aquasecurity/trivy/security/advisories/GHSA-q3fv-x8vg-qqm4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54448"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aquasecurity/trivy/pull/10718"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aquasecurity/trivy/commit/441251e51ae46cbcf7f436547e0a5766b25328b4"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/aquasecurity/trivy"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aquasecurity/trivy/releases/tag/v0.71.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Trivy: Helm chart tar bomb causes OOM via unbounded io.ReadAll in parser"
}

CVE-2026-54448 (GCVE-0-2026-54448)

Vulnerability from cvelistv5 – Published: 2026-06-25 16:27 – Updated: 2026-06-25 18:55

Title

Trivy: Helm chart tar bomb causes OOM via unbounded io.ReadAll in parser

Summary

Trivy is a security scanner. Prior to 0.71.0, when Trivy scans a Helm chart archive (.tgz), its custom tar unpacker reads each entry with io.ReadAll(tr) and no size limit. An attacker who can place a malicious .tgz file in the scanned path can craft a small compressed archive that decompresses to gigabytes, causing the Trivy process to be killed by the OS OOM killer. This vulnerability is fixed in 0.71.0.

Severity

6.9 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling
CWE-789 - Memory Allocation with Excessive Size Value

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/aquasecurity/trivy/security/ad…	x_refsource_CONFIRM
https://github.com/aquasecurity/trivy/pull/10718	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
aquasecurity	trivy	Affected: < 0.71.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-54448",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-25T18:55:22.152737Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-25T18:55:50.084Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/aquasecurity/trivy/security/advisories/GHSA-q3fv-x8vg-qqm4"
          },
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/aquasecurity/trivy/pull/10718"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "trivy",
          "vendor": "aquasecurity",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.71.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Trivy is a security scanner. Prior to 0.71.0, when Trivy scans a Helm chart archive (.tgz), its custom tar unpacker reads each entry with io.ReadAll(tr) and no size limit. An attacker who can place a malicious .tgz file in the scanned path can craft a small compressed archive that decompresses to gigabytes, causing the Trivy process to be killed by the OS OOM killer. This vulnerability is fixed in 0.71.0."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-789",
              "description": "CWE-789: Memory Allocation with Excessive Size Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T16:27:33.659Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/aquasecurity/trivy/security/advisories/GHSA-q3fv-x8vg-qqm4",
          "tags": [
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          ],
          "url": "https://github.com/aquasecurity/trivy/security/advisories/GHSA-q3fv-x8vg-qqm4"
        },
        {
          "name": "https://github.com/aquasecurity/trivy/pull/10718",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/aquasecurity/trivy/pull/10718"
        }
      ],
      "source": {
        "advisory": "GHSA-q3fv-x8vg-qqm4",
        "discovery": "UNKNOWN"
      },
      "title": "Trivy: Helm chart tar bomb causes OOM via unbounded io.ReadAll in parser"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-54448",
    "datePublished": "2026-06-25T16:27:33.659Z",
    "dateReserved": "2026-06-15T15:30:40.317Z",
    "dateUpdated": "2026-06-25T18:55:50.084Z",
    "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.

Action not permitted

GHSA-Q3FV-X8VG-QQM4

Summary

Affected configurations

Impact

Patches

Workarounds

Credits

CVE-2026-54448 (GCVE-0-2026-54448)

Tags

Sightings

Nomenclature