FKIE_CVE-2026-25529

Vulnerability from fkie_nvd - Published: 2026-03-12 17:16 - Updated: 2026-03-19 17:53
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
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.
References
security-advisories@github.comhttps://github.com/postalserver/postal/security/advisories/GHSA-5f4r-5jpr-rfhcMitigation, Vendor Advisory
Impacted products
Vendor Product Version
postalserver postal *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:postalserver:postal:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A49508C5-16FE-4F8B-81F7-980BD5DFD627",
              "versionEndExcluding": "3.3.5",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "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."
    },
    {
      "lang": "es",
      "value": "Postal es un servidor SMTP de c\u00f3digo abierto. Las versiones de Postal anteriores a la 3.3.5 ten\u00edan una vulnerabilidad de inyecci\u00f3n HTML que permit\u00eda incluir datos sin escapar en la interfaz de administraci\u00f3n. La forma principal de a\u00f1adir datos sin escapar es a trav\u00e9s del m\u00e9todo \u0027send/raw\u0027 de la API. Esto podr\u00eda permitir la inyecci\u00f3n de HTML arbitrario en la p\u00e1gina, lo que podr\u00eda modificar la p\u00e1gina de forma enga\u00f1osa o permitir la ejecuci\u00f3n de javascript no autorizado. Corregido en la versi\u00f3n 3.3.5 y posteriores."
    }
  ],
  "id": "CVE-2026-25529",
  "lastModified": "2026-03-19T17:53:51.943",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-12T17:16:46.953",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://github.com/postalserver/postal/security/advisories/GHSA-5f4r-5jpr-rfhc"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.