Search

Find a vulnerability

Search criteria

    2 vulnerabilities by postalserver

    CVE-2026-25529 (GCVE-0-2026-25529)

    Vulnerability from cvelistv5 – Published: 2026-03-12 16:35 – Updated: 2026-03-12 17:57
    VLAI
    Title
    Postal has HTML injection / XSS in message view
    Summary
    Postal is an open source SMTP server. Postal versions less than 3.3.5 had a HTML injection vulnerability that allowed unescaped data to be included in the admin interface. The primary way for unescaped data to be added is via the API's "send/raw" method. This could allow arbitrary HTML to be injected in to the page which may modify the page in a misleading way or allow for unauthorised javascript to be executed. Fixed in 3.3.5 and higher.
    Severity
    8.1 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    postalserver postal Affected: < 3.3.5
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-25529",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-12T17:57:23.299542Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-12T17:57:37.553Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "postal",
          "vendor": "postalserver",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.3.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Postal is an open source SMTP server. Postal versions less than 3.3.5 had a HTML injection vulnerability that allowed unescaped data to be included in the admin interface. The primary way for unescaped data to be added is via the API\u0027s \"send/raw\" method. This could allow arbitrary HTML to be injected in to the page which may modify the page in a misleading way or allow for unauthorised javascript to be executed. Fixed in 3.3.5 and higher."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-12T16:35:33.384Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/postalserver/postal/security/advisories/GHSA-5f4r-5jpr-rfhc",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/postalserver/postal/security/advisories/GHSA-5f4r-5jpr-rfhc"
        }
      ],
      "source": {
        "advisory": "GHSA-5f4r-5jpr-rfhc",
        "discovery": "UNKNOWN"
      },
      "title": "Postal has HTML injection / XSS in message view"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-25529",
    "datePublished": "2026-03-12T16:35:33.384Z",
    "dateReserved": "2026-02-02T19:59:47.373Z",
    "dateUpdated": "2026-03-12T17:57:37.553Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2024-27938 (GCVE-0-2024-27938)

    Vulnerability from cvelistv5 – Published: 2024-03-11 21:18 – Updated: 2024-08-27 19:48
    VLAI
    Title
    SMTP Smuggling in Postal
    Summary
    Postal is an open source SMTP server. Postal versions less than 3.0.0 are vulnerable to SMTP Smuggling attacks which may allow incoming e-mails to be spoofed. This, in conjunction with a cooperative outgoing SMTP service, would allow for an incoming e-mail to be received by Postal addressed from a server that a user has 'authorised' to send mail on their behalf but were not the genuine author of the e-mail. Postal is not affected for sending outgoing e-mails as email is re-encoded with `<CR><LF>` line endings when transmitted over SMTP. This issue has been addressed and users should upgrade to Postal v3.0.0 or higher. Once upgraded, Postal will only accept End of DATA sequences which are explicitly `<CR><LF>.<CR><LF>`. If a non-compliant sequence is detected it will be logged to the SMTP server log. There are no workarounds for this issue.
    Severity
    5.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-116 - Improper Encoding or Escaping of Output
    Assigner
    References
    Impacted products
    Vendor Product Version
    postalserver postal Affected: < 3.0.0
    		Create a notification for this product.
    postalserver postal Affected: 0 , < 3.0.0 (custom)
        cpe:2.3:a:postalserver:postal:*:*:*:*:*:*:*:*
    		 Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T00:41:55.742Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/postalserver/postal/security/advisories/GHSA-j42r-6c99-hqf2",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/postalserver/postal/security/advisories/GHSA-j42r-6c99-hqf2"
          },
          {
            "name": "https://github.com/postalserver/postal/commit/0140dc4",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/postalserver/postal/commit/0140dc4"
          },
          {
            "name": "https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide"
          },
          {
            "name": "https://www.postfix.org/smtp-smuggling.html",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.postfix.org/smtp-smuggling.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:postalserver:postal:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "postal",
            "vendor": "postalserver",
            "versions": [
              {
                "lessThan": "3.0.0",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-27938",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-27T19:45:59.549699Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-08-27T19:48:22.783Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "postal",
          "vendor": "postalserver",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.0.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Postal is an open source SMTP server. Postal versions less than 3.0.0 are vulnerable to SMTP Smuggling attacks which may allow incoming e-mails to be spoofed. This, in conjunction with a cooperative outgoing SMTP service, would allow for an incoming e-mail to be received by Postal addressed from a server that a user has \u0027authorised\u0027 to send mail on their behalf but were not the genuine author of the e-mail. Postal is not affected for sending outgoing e-mails as email is re-encoded with `\u003cCR\u003e\u003cLF\u003e` line endings when transmitted over SMTP. This issue has been addressed and users should upgrade to Postal v3.0.0 or higher. Once upgraded, Postal will only accept End of DATA sequences which are explicitly `\u003cCR\u003e\u003cLF\u003e.\u003cCR\u003e\u003cLF\u003e`. If a non-compliant sequence is detected it will be logged to the SMTP server log. There are no workarounds for this issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-116",
              "description": "CWE-116: Improper Encoding or Escaping of Output",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-03-11T21:18:14.988Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/postalserver/postal/security/advisories/GHSA-j42r-6c99-hqf2",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/postalserver/postal/security/advisories/GHSA-j42r-6c99-hqf2"
        },
        {
          "name": "https://github.com/postalserver/postal/commit/0140dc4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/postalserver/postal/commit/0140dc4"
        },
        {
          "name": "https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide"
        },
        {
          "name": "https://www.postfix.org/smtp-smuggling.html",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.postfix.org/smtp-smuggling.html"
        }
      ],
      "source": {
        "advisory": "GHSA-j42r-6c99-hqf2",
        "discovery": "UNKNOWN"
      },
      "title": "SMTP Smuggling in Postal"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-27938",
    "datePublished": "2024-03-11T21:18:14.988Z",
    "dateReserved": "2024-02-28T15:14:14.217Z",
    "dateUpdated": "2024-08-27T19:48:22.783Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}