CVE-2026-49217 (GCVE-0-2026-49217)

Vulnerability from cvelistv5 – Published: 2026-08-20 22:01 – Updated: 2026-08-20 22:01
VLAI
Title
Mailu missing authentication on PATCH /api/v1/token/<id>, which allows unauthenticated removal of IP restrictions
Summary
Mailu is a mail server as a set of Docker images. Prior to version 2024.06.52, a missing authorization check in the Mailu admin REST API allows any unauthenticated attacker to remove any potential IP restriction or update the comment field from any existing user token provided the REST API is enabled. Upgrade to Mailu 2024.06.52 to receive a patch or, as a workaround, turn the REST API off.
CWE
  • CWE-306 - Missing Authentication for Critical Function
References
Impacted products
Vendor Product Version CPE status
Mailu Mailu Affected: < 2024.06.52
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "Mailu",
          "vendor": "Mailu",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2024.06.52"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Mailu is a mail server as a set of Docker images. Prior to version 2024.06.52, a missing authorization check in the Mailu admin REST API allows any unauthenticated attacker to remove any potential IP restriction or update the comment field from any existing user token provided the REST API is enabled. Upgrade to Mailu 2024.06.52 to receive a patch or, as a workaround, turn the REST API off."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-306",
              "description": "CWE-306: Missing Authentication for Critical Function",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-20T22:01:41.588Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/Mailu/Mailu/security/advisories/GHSA-2w8v-6xr5-g9gh",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/Mailu/Mailu/security/advisories/GHSA-2w8v-6xr5-g9gh"
        }
      ],
      "source": {
        "advisory": "GHSA-2w8v-6xr5-g9gh",
        "discovery": "UNKNOWN"
      },
      "title": "Mailu missing authentication on PATCH /api/v1/token/\u003cid\u003e, which allows unauthenticated removal of IP restrictions"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-49217",
    "datePublished": "2026-08-20T22:01:41.588Z",
    "dateReserved": "2026-05-28T03:42:34.341Z",
    "dateUpdated": "2026-08-20T22:01:41.588Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-49217",
      "date": "2026-08-21",
      "epss": "0.00253",
      "percentile": "0.17128"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-49217\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-08-20T22:17:19.803\",\"lastModified\":\"2026-08-20T22:17:19.803\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Mailu is a mail server as a set of Docker images. Prior to version 2024.06.52, a missing authorization check in the Mailu admin REST API allows any unauthenticated attacker to remove any potential IP restriction or update the comment field from any existing user token provided the REST API is enabled. Upgrade to Mailu 2024.06.52 to receive a patch or, as a workaround, turn the REST API off.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"Mailu\",\"product\":\"Mailu\",\"versions\":[{\"version\":\"\u003c 2024.06.52\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-306\"}]}],\"references\":[{\"url\":\"https://github.com/Mailu/Mailu/security/advisories/GHSA-2w8v-6xr5-g9gh\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}



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