Vulnerability-Lookup

CVE-2026-49445 (GCVE-0-2026-49445)

Vulnerability from cvelistv5 – Published: 2026-07-15 19:11 – Updated: 2026-07-15 19:11

Title

Cilium: Sensitive information disclosure and cluster disruption via local Envoy admin socket access

Summary

Cilium is a networking, observability, and security solution. Prior to 1.17.14, 1.18.8, and 1.19.2, when Cilium L7 functionality is enabled, the embedded or standalone Envoy instance creates a world-accessible admin.sock on cluster nodes, allowing a local attacker to access Envoy admin endpoints, expose TLS secrets, disrupt cluster traffic, or terminate Envoy. This issue is fixed in versions 1.17.14, 1.18.8, and 1.19.2.

Severity

9.2 (Critical)


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

CWE

CWE-732 - Incorrect Permission Assignment for Critical Resource

Assigner

GitHub_M

References

6 references

URL	Tags
https://github.com/cilium/cilium/security/advisor…	x_refsource_CONFIRM
https://github.com/cilium/cilium/pull/44512	x_refsource_MISC
https://github.com/cilium/cilium/commit/7bfbdd5c1…	x_refsource_MISC
https://github.com/cilium/cilium/releases/tag/v1.17.14	x_refsource_MISC
https://github.com/cilium/cilium/releases/tag/v1.18.8	x_refsource_MISC
https://github.com/cilium/cilium/releases/tag/v1.19.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
cilium	cilium	Affected: < 1.17.14 Affected: >= 1.18.0, < 1.18.8 Affected: >= 1.19.0, < 1.19.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "cilium",
          "vendor": "cilium",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.17.14"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.18.0, \u003c 1.18.8"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.19.0, \u003c 1.19.2"
            }
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        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "Cilium is a networking, observability, and security solution. Prior to 1.17.14, 1.18.8, and 1.19.2, when Cilium L7 functionality is enabled, the embedded or standalone Envoy instance creates a world-accessible admin.sock on cluster nodes, allowing a local attacker to access Envoy admin endpoints, expose TLS secrets, disrupt cluster traffic, or terminate Envoy. This issue is fixed in versions 1.17.14, 1.18.8, and 1.19.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-732",
              "description": "CWE-732: Incorrect Permission Assignment for Critical Resource",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-15T19:11:55.303Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/cilium/cilium/security/advisories/GHSA-3fcv-jvfp-m4q9",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/cilium/cilium/security/advisories/GHSA-3fcv-jvfp-m4q9"
        },
        {
          "name": "https://github.com/cilium/cilium/pull/44512",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cilium/cilium/pull/44512"
        },
        {
          "name": "https://github.com/cilium/cilium/commit/7bfbdd5c1be83d6c9ba3e089b4c804b6603505b6",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cilium/cilium/commit/7bfbdd5c1be83d6c9ba3e089b4c804b6603505b6"
        },
        {
          "name": "https://github.com/cilium/cilium/releases/tag/v1.17.14",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cilium/cilium/releases/tag/v1.17.14"
        },
        {
          "name": "https://github.com/cilium/cilium/releases/tag/v1.18.8",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cilium/cilium/releases/tag/v1.18.8"
        },
        {
          "name": "https://github.com/cilium/cilium/releases/tag/v1.19.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cilium/cilium/releases/tag/v1.19.2"
        }
      ],
      "source": {
        "advisory": "GHSA-3fcv-jvfp-m4q9",
        "discovery": "UNKNOWN"
      },
      "title": "Cilium: Sensitive information disclosure and cluster disruption via local Envoy admin socket access"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-49445",
    "datePublished": "2026-07-15T19:11:55.303Z",
    "dateReserved": "2026-05-30T02:43:33.106Z",
    "dateUpdated": "2026-07-15T19:11:55.303Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-49445",
      "date": "2026-06-14",
      "epss": "0.00017",
      "percentile": "0.04431"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-49445\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-07-15T20:17:10.453\",\"lastModified\":\"2026-07-15T20:54:43.733\",\"vulnStatus\":\"Undergoing Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Cilium is a networking, observability, and security solution. Prior to 1.17.14, 1.18.8, and 1.19.2, when Cilium L7 functionality is enabled, the embedded or standalone Envoy instance creates a world-accessible admin.sock on cluster nodes, allowing a local attacker to access Envoy admin endpoints, expose TLS secrets, disrupt cluster traffic, or terminate Envoy. This issue is fixed in versions 1.17.14, 1.18.8, and 1.19.2.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"cilium\",\"product\":\"cilium\",\"versions\":[{\"version\":\"\u003c 1.17.14\",\"status\":\"affected\"},{\"version\":\"\u003e= 1.18.0, \u003c 1.18.8\",\"status\":\"affected\"},{\"version\":\"\u003e= 1.19.0, \u003c 1.19.2\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H\",\"baseScore\":9.2,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.5,\"impactScore\":6.0}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-732\"}]}],\"references\":[{\"url\":\"https://github.com/cilium/cilium/commit/7bfbdd5c1be83d6c9ba3e089b4c804b6603505b6\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/cilium/cilium/pull/44512\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/cilium/cilium/releases/tag/v1.17.14\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/cilium/cilium/releases/tag/v1.18.8\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/cilium/cilium/releases/tag/v1.19.2\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/cilium/cilium/security/advisories/GHSA-3fcv-jvfp-m4q9\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}

FKIE_CVE-2026-49445

Vulnerability from fkie_nvd - Published: 2026-07-15 20:17 - Updated: 2026-07-15 20:54

Severity

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

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/cilium/cilium/commit/7bfbdd5c1be83d6c9ba3e089b4c804b6603505b6
	security-advisories@github.com	https://github.com/cilium/cilium/pull/44512
	security-advisories@github.com	https://github.com/cilium/cilium/releases/tag/v1.17.14
	security-advisories@github.com	https://github.com/cilium/cilium/releases/tag/v1.18.8
	security-advisories@github.com	https://github.com/cilium/cilium/releases/tag/v1.19.2
	security-advisories@github.com	https://github.com/cilium/cilium/security/advisories/GHSA-3fcv-jvfp-m4q9

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "cilium",
          "vendor": "cilium",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.17.14"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.18.0, \u003c 1.18.8"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.19.0, \u003c 1.19.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Cilium is a networking, observability, and security solution. Prior to 1.17.14, 1.18.8, and 1.19.2, when Cilium L7 functionality is enabled, the embedded or standalone Envoy instance creates a world-accessible admin.sock on cluster nodes, allowing a local attacker to access Envoy admin endpoints, expose TLS secrets, disrupt cluster traffic, or terminate Envoy. This issue is fixed in versions 1.17.14, 1.18.8, and 1.19.2."
    }
  ],
  "id": "CVE-2026-49445",
  "lastModified": "2026-07-15T20:54:43.733",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 9.2,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 6.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-15T20:17:10.453",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/cilium/cilium/commit/7bfbdd5c1be83d6c9ba3e089b4c804b6603505b6"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/cilium/cilium/pull/44512"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/cilium/cilium/releases/tag/v1.17.14"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/cilium/cilium/releases/tag/v1.18.8"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/cilium/cilium/releases/tag/v1.19.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/cilium/cilium/security/advisories/GHSA-3fcv-jvfp-m4q9"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-732"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

GHSA-3FCV-JVFP-M4Q9

Vulnerability from github – Published: 2026-07-06 17:03 – Updated: 2026-07-06 17:03

Summary

Cilium vulnerable to sensitive information disclosure and cluster disruption via local Envoy admin socket access

Details

Impact

When Cilium L7 functionality is enabled on a cluster, the Envoy instance supporting this functionality creates a world-accessible socket on cluster nodes. A local attacker would be able to access Envoy admin endpoints. Depending on deployment configuration, this can expose sensitive information or allow disruptive administrative operations, such as:

Exposing TLS secrets
Disrupting traffic in the cluster
Terminating the Envoy process

This issue affects both the embedded and standalone Envoy deployment models.

Patches

This issue affects:

Cilium v1.19 between v1.19.0 and v1.19.1 inclusive
Cilium v1.18 between v1.18.0 and v1.18.7 inclusive
All versions of Cilium prior to v1.17.14

This issue has been patched in https://github.com/cilium/cilium/pull/44512, included in:

Cilium v1.19.2
Cilium v1.18.8
Cilium v1.17.14

Workarounds

There is no known workaround to this issue.

Acknowledgements

The Cilium community has worked together with members of Isovalent to prepare these mitigations. Special thanks to moemen for reporting the issue and 0xch4z for their work on triaging and remediating this issue.

For more information

If there are any questions or comments about this advisory, please reach out on [Slack (https://docs.cilium.io/en/latest/community/community/).

If anyone thinks they have found a vulnerability affecting Cilium, it is strongly encouraged to report it to the security mailing list at security@cilium.io. This is a private mailing list for the Cilium security team, and the report will be treated as a top priority.

Severity

9.2 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/cilium/cilium"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.19.0"
            },
            {
              "fixed": "1.19.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/cilium/cilium"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.18.0"
            },
            {
              "fixed": "1.18.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/cilium/cilium"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.17.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-49445"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-06T17:03:20Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "### Impact\n\nWhen Cilium L7 functionality is enabled on a cluster, the Envoy instance supporting this functionality creates a world-accessible socket on cluster nodes. A local attacker would be able to access Envoy admin endpoints. Depending on deployment configuration, this can expose sensitive information or allow disruptive administrative operations, such as:\n\n- Exposing TLS secrets\n- Disrupting traffic in the cluster\n- Terminating the Envoy process  \n\nThis issue affects both the embedded and standalone Envoy deployment models.\n\n### Patches\n\nThis issue affects:\n\n- Cilium v1.19 between v1.19.0 and v1.19.1 inclusive\n- Cilium v1.18 between v1.18.0 and v1.18.7 inclusive\n- All versions of Cilium prior to v1.17.14\n\nThis issue has been patched in https://github.com/cilium/cilium/pull/44512, included in:\n\n- Cilium v1.19.2\n- Cilium v1.18.8\n- Cilium v1.17.14\n\n### Workarounds\n\nThere is no known workaround to this issue.\n\n### Acknowledgements\n\nThe Cilium community has worked together with members of Isovalent to prepare these mitigations. Special thanks to [moemen](https://github.com/moemen) for reporting the issue and [0xch4z](https://github.com/0xch4z) for their work on triaging and remediating this issue.\n\n### For more information\n\nIf there are any questions or comments about this advisory, please reach out on [Slack (https://docs.cilium.io/en/latest/community/community/).\n\nIf anyone thinks they have found a vulnerability affecting Cilium, it is strongly encouraged to report it to the security mailing list at [security@cilium.io](mailto:security@cilium.io). This is a private mailing list for the Cilium security team, and the report will be treated as a top priority.",
  "id": "GHSA-3fcv-jvfp-m4q9",
  "modified": "2026-07-06T17:03:20Z",
  "published": "2026-07-06T17:03:20Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/cilium/cilium/security/advisories/GHSA-3fcv-jvfp-m4q9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cilium/cilium/pull/44512"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/cilium/cilium"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Cilium vulnerable to sensitive information disclosure and cluster disruption via local Envoy admin socket access"
}

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

CVE-2026-49445 (GCVE-0-2026-49445)

FKIE_CVE-2026-49445

GHSA-3FCV-JVFP-M4Q9

Impact

Patches

Workarounds

Acknowledgements

For more information

Tags

Sightings

Nomenclature