Vulnerability-Lookup

CVE-2026-53716 (GCVE-0-2026-53716)

Vulnerability from cvelistv5 – Published: 2026-09-14 20:15 – Updated: 2026-09-16 16:21

Title

Envoy Gateway: Wasm HTTP fetch decompresses gzip without output-size limit

Summary

Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway. Prior to 1.7.4 and 1.8.1, getFileFromGZ in internal/wasm/httpfetcher.go calls io.ReadAll on a gzip.Reader without limiting decompressed output when a tenant-controlled EnvoyExtensionPolicy.spec.wasm[].code.http.url points to a reachable compressed Wasm payload. The 256 MiB compressed-input cap does not constrain the expanded size, no operator Wasm URL allowlist exists, and the optional sha256 check occurs only after decompression, so a comparatively small gzip stream can force a multi-gigabyte allocation in the shared controller. The resulting out-of-memory termination restarts the controller, re-reconciles the persistent custom resource, and can create a persistent cross-tenant control-plane outage. This issue is fixed in versions 1.7.4 and 1.8.1.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-16 16:21 UTC

CWE

CWE-789 - Memory Allocation with Excessive Size Value

Assigner

GitHub_M mitre root

References

9 references

URL	Tags
https://github.com/envoyproxy/gateway/security/ad…	x_refsource_CONFIRM
https://github.com/envoyproxy/gateway/pull/9171	x_refsource_MISC
https://github.com/envoyproxy/gateway/pull/9172	x_refsource_MISC
https://github.com/envoyproxy/gateway/pull/9173	x_refsource_MISC
https://github.com/envoyproxy/gateway/commit/5a78…	x_refsource_MISC
https://github.com/envoyproxy/gateway/commit/96e2…	x_refsource_MISC
https://github.com/envoyproxy/gateway/commit/b473…	x_refsource_MISC
https://github.com/envoyproxy/gateway/releases/ta…	x_refsource_MISC
https://github.com/envoyproxy/gateway/releases/ta…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
envoyproxy	gateway	Affected: < 1.7.4 Affected: >= 1.8.0-rc.0, < 1.8.1	guessed

Show details on NVD website

JSON

To clipboard

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CLEANSTART-2026-FY77467 (CVE-2026-53716)

Vulnerability from cleanstart – Published: 2026-09-18 09:51 – Updated: 2026-08-03 09:45 – Source website

Summary

Security fix for CVE-2026-53716 applied in: tigera-operator 1.39.3-r1, tigera-operator-fips 1.37.2-r4, tigera-operator-fips 1.38.16-r2

Details

CVE-2026-53716 affects multiple packages. This issue is resolved in later releases. See references for individual vulnerability details.

References

URL

Type

	https://github.com/cleanstart-dev/cleanstart-secu…	ADVISORY
	https://osv.dev/vulnerability/CVE-2026-53716	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2026-53716	WEB

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "tigera-operator"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.39.3-r1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "tigera-operator-fips"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.37.2-r4"
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          ],
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      ]
    },
    {
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      },
      "ranges": [
        {
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        }
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "CVE-2026-53716 affects multiple packages. This issue is resolved in later releases. See references for individual vulnerability details.",
  "id": "CLEANSTART-2026-FY77467",
  "modified": "2026-08-03T09:45:51Z",
  "published": "2026-09-18T09:51:39.501841Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-FY77467.json"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-53716"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53716"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "summary": "Security fix for CVE-2026-53716 applied in: tigera-operator 1.39.3-r1, tigera-operator-fips 1.37.2-r4, tigera-operator-fips 1.38.16-r2",
  "upstream": [
    "CVE-2026-53716"
  ]
}

CLEANSTART-2026-YR40466 (CVE-2026-53713)

Vulnerability from cleanstart – Published: 2026-08-13 12:10 – Updated: 2026-09-18 11:59 – Source website

Withdrawn 2026-09-18

Summary

Security fixes in tigera-operator 1.39.3-r1

Details

Package tigera-operator version 1.39.3-r1 fixes 17 vulnerabilities: CVE-2026-53713, CVE-2026-53714, CVE-2026-53715, CVE-2026-53716, CVE-2026-53717...

References

URL

Type

https://github.com/tigera/operator

WEB

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "tigera-operator"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.39.3-r1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.39.3-r1"
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "Package tigera-operator version 1.39.3-r1 fixes 17 vulnerabilities: CVE-2026-53713, CVE-2026-53714, CVE-2026-53715, CVE-2026-53716, CVE-2026-53717...",
  "id": "CLEANSTART-2026-YR40466",
  "modified": "2026-09-18T11:59:01.768079Z",
  "published": "2026-08-13T12:10:09Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tigera/operator"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "summary": "Security fixes in tigera-operator 1.39.3-r1",
  "upstream": [
    "CVE-2026-53713",
    "CVE-2026-53714",
    "CVE-2026-53715",
    "CVE-2026-53716",
    "CVE-2026-53717",
    "CVE-2026-53718",
    "CVE-2026-53719",
    "CVE-2026-22771",
    "ghsa-wcrf-9vrr-854f",
    "ghsa-22xc-xg2r-9j7v",
    "ghsa-8fv2-88gg-hm7q",
    "ghsa-cxpq-8v7q-cg56",
    "ghsa-fcrp-7gc2-93g7",
    "ghsa-h7pq-86h8-rp5x",
    "ghsa-m2v6-2jmh-4c68",
    "ghsa-xrwg-mqj6-6m22",
    "ghsa-259r-337f-4rfw"
  ],
  "withdrawn": "2026-09-18T11:59:01.768079Z"
}

CLEANSTART-2026-ZE35909 (CVE-2026-53713)

Vulnerability from cleanstart – Published: 2026-09-01 11:17 – Updated: 2026-09-18 11:59 – Source website

Withdrawn 2026-09-18

Summary

Security fixes in tigera-operator-fips 1.38.16-r1

Details

Package tigera-operator-fips version 1.38.16-r1 fixes 7 vulnerabilities: CVE-2026-53713, CVE-2026-53714, CVE-2026-53715, CVE-2026-53716, CVE-2026-53717...

References

URL

Type

https://github.com/tigera/operator

WEB

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "tigera-operator-fips"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.38.16-r1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.38.16-r1"
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "Package tigera-operator-fips version 1.38.16-r1 fixes 7 vulnerabilities: CVE-2026-53713, CVE-2026-53714, CVE-2026-53715, CVE-2026-53716, CVE-2026-53717...",
  "id": "CLEANSTART-2026-ZE35909",
  "modified": "2026-09-18T11:59:01.768079Z",
  "published": "2026-09-01T11:17:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tigera/operator"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "summary": "Security fixes in tigera-operator-fips 1.38.16-r1",
  "upstream": [
    "CVE-2026-53713",
    "CVE-2026-53714",
    "CVE-2026-53715",
    "CVE-2026-53716",
    "CVE-2026-53717",
    "CVE-2026-53718",
    "CVE-2026-53719"
  ],
  "withdrawn": "2026-09-18T11:59:01.768079Z"
}

CLEANSTART-2026-ZW26373 (CVE-2026-53713)

Vulnerability from cleanstart – Published: 2026-09-01 11:17 – Updated: 2026-09-18 11:59 – Source website

Withdrawn 2026-09-18

Summary

Security fixes in tigera-operator-fips 1.38.16-r2

Details

Package tigera-operator-fips version 1.38.16-r2 fixes 8 vulnerabilities: CVE-2026-53713, CVE-2026-53714, CVE-2026-53715, CVE-2026-53716, CVE-2026-53717...

References

URL

Type

https://github.com/tigera/operator

WEB

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "tigera-operator-fips"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.38.16-r2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.38.16-r2"
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "Package tigera-operator-fips version 1.38.16-r2 fixes 8 vulnerabilities: CVE-2026-53713, CVE-2026-53714, CVE-2026-53715, CVE-2026-53716, CVE-2026-53717...",
  "id": "CLEANSTART-2026-ZW26373",
  "modified": "2026-09-18T11:59:01.768079Z",
  "published": "2026-09-01T11:17:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tigera/operator"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "summary": "Security fixes in tigera-operator-fips 1.38.16-r2",
  "upstream": [
    "CVE-2026-53713",
    "CVE-2026-53714",
    "CVE-2026-53715",
    "CVE-2026-53716",
    "CVE-2026-53717",
    "CVE-2026-53718",
    "CVE-2026-53719",
    "CVE-2026-56852"
  ],
  "withdrawn": "2026-09-18T11:59:01.768079Z"
}

FKIE_CVE-2026-53716

Vulnerability from fkie_nvd - Published: 2026-09-14 21:17 - Updated: 2026-09-16 17:17

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/envoyproxy/gateway/commit/5a78db82b7cf4fc5bebbeda2c50952892038a464
	security-advisories@github.com	https://github.com/envoyproxy/gateway/commit/96e2b750868a459ace4b8b68e6a6e4fb0152b9b7
	security-advisories@github.com	https://github.com/envoyproxy/gateway/commit/b4737180c7e597490c6363075c565fa8cf24eead
	security-advisories@github.com	https://github.com/envoyproxy/gateway/pull/9171
	security-advisories@github.com	https://github.com/envoyproxy/gateway/pull/9172
	security-advisories@github.com	https://github.com/envoyproxy/gateway/pull/9173
	security-advisories@github.com	https://github.com/envoyproxy/gateway/releases/tag/v1.7.4
	security-advisories@github.com	https://github.com/envoyproxy/gateway/releases/tag/v1.8.1
	security-advisories@github.com	https://github.com/envoyproxy/gateway/security/advisories/GHSA-cxpq-8v7q-cg56

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "gateway",
          "vendor": "envoyproxy",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.7.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.8.0-rc.0, \u003c 1.8.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway. Prior to 1.7.4 and 1.8.1, getFileFromGZ in internal/wasm/httpfetcher.go calls io.ReadAll on a gzip.Reader without limiting decompressed output when a tenant-controlled EnvoyExtensionPolicy.spec.wasm[].code.http.url points to a reachable compressed Wasm payload. The 256 MiB compressed-input cap does not constrain the expanded size, no operator Wasm URL allowlist exists, and the optional sha256 check occurs only after decompression, so a comparatively small gzip stream can force a multi-gigabyte allocation in the shared controller. The resulting out-of-memory termination restarts the controller, re-reconciles the persistent custom resource, and can create a persistent cross-tenant control-plane outage. This issue is fixed in versions 1.7.4 and 1.8.1."
    }
  ],
  "id": "CVE-2026-53716",
  "lastModified": "2026-09-16T17:17:20.017",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-53716",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-16T16:21:03.789017Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-14T21:17:12.983",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/commit/5a78db82b7cf4fc5bebbeda2c50952892038a464"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/commit/96e2b750868a459ace4b8b68e6a6e4fb0152b9b7"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/commit/b4737180c7e597490c6363075c565fa8cf24eead"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/pull/9171"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/pull/9172"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/pull/9173"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/releases/tag/v1.7.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/releases/tag/v1.8.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/security/advisories/GHSA-cxpq-8v7q-cg56"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-789"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-CXPQ-8V7Q-CG56

Vulnerability from github – Published: 2026-07-16 19:18 – Updated: 2026-07-16 19:18

Summary

Envoy Gateway: Wasm HTTP fetch decompresses gzip without output-size limit

Details

Vulnerability report without repro case. Repro case may be added later after harness is complete.

Preconditions (4): - Tenant can create EnvoyExtensionPolicy (baseline) - Attacker hosts a gzip-bomb at a reachable URL - sha256 unset (optional field; check is post-decompression anyway) - No operator Wasm-URL allowlist (none exists in code)

Description

getFileFromGZ calls io.ReadAll on a raw gzip.Reader (httpfetcher.go:216) with no output bound, while the compressed input is capped at 256 MiB (httpfetcher.go:139). The bytes originate from a tenant-controlled EnvoyExtensionPolicy.spec.wasm[].code.http.url (envoyextensionpolicy.go:1077 → cache.go:248 → httpfetcher.go:147 → :233), so an untrusted tenant can point at a ~10 MiB gzip-of-zeros and force ~10 GiB allocation in the shared controller process. All candidate guards execute either before the body is buffered or after decompression. OOM-kills, restarts, re-reconciles same CR, crash-loops — persistent cross-tenant control-plane outage with PR:L/AC:L and scope change → HIGH despite availability-only.

Severity

6.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/envoyproxy/gateway"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.8.0-rc.0"
            },
            {
              "fixed": "1.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/envoyproxy/gateway"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-53716"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-789"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-16T19:18:08Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "Vulnerability report without repro case. Repro case may be added later after harness is complete.\n\n**Preconditions (4):**\n- Tenant can create EnvoyExtensionPolicy (baseline)\n- Attacker hosts a gzip-bomb at a reachable URL\n- sha256 unset (optional field; check is post-decompression anyway)\n- No operator Wasm-URL allowlist (none exists in code)\n\n**Description**\n\ngetFileFromGZ calls io.ReadAll on a raw gzip.Reader (httpfetcher.go:216) with no output bound, while the compressed input is capped at 256 MiB (httpfetcher.go:139). The bytes originate from a tenant-controlled EnvoyExtensionPolicy.spec.wasm[].code.http.url (envoyextensionpolicy.go:1077 \u2192 cache.go:248 \u2192 httpfetcher.go:147 \u2192 :233), so an untrusted tenant can point at a ~10 MiB gzip-of-zeros and force ~10 GiB allocation in the shared controller process. All candidate guards execute either before the body is buffered or after decompression. OOM-kills, restarts, re-reconciles same CR, crash-loops \u2014 persistent cross-tenant control-plane outage with PR:L/AC:L and scope change \u2192 HIGH despite availability-only.",
  "id": "GHSA-cxpq-8v7q-cg56",
  "modified": "2026-07-16T19:18:08Z",
  "published": "2026-07-16T19:18:08Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/envoyproxy/gateway/security/advisories/GHSA-cxpq-8v7q-cg56"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/envoyproxy/gateway"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Envoy Gateway: Wasm HTTP fetch decompresses gzip without output-size limit"
}

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-2026-53716 (GCVE-0-2026-53716)

CLEANSTART-2026-FY77467 (CVE-2026-53716)

CLEANSTART-2026-YR40466 (CVE-2026-53713)

CLEANSTART-2026-ZE35909 (CVE-2026-53713)

CLEANSTART-2026-ZW26373 (CVE-2026-53713)

FKIE_CVE-2026-53716

GHSA-CXPQ-8V7Q-CG56

Tags

Sightings

Nomenclature

Related by attack behaviour