CVE-2026-35543 (GCVE-0-2026-35543)

Vulnerability from cvelistv5 – Published: 2026-04-03 03:57 – Updated: 2026-04-03 12:50
VLAI
Summary
An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed via SVG content (with animate attributes) in an e-mail message. This may lead to information disclosure or access-control bypass.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-669 - Incorrect Resource Transfer Between Spheres
Assigner
References
Impacted products
Vendor Product Version
Roundcube Webmail Affected: 0 , < 1.5.14 (semver)
Affected: 1.6.0 , < 1.6.14 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-35543",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-03T12:50:45.786052Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-03T12:50:54.031Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Webmail",
          "vendor": "Roundcube",
          "versions": [
            {
              "lessThan": "1.5.14",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.6.14",
              "status": "affected",
              "version": "1.6.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed via SVG content (with animate attributes) in an e-mail message. This may lead to information disclosure or access-control bypass."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-669",
              "description": "CWE-669 Incorrect Resource Transfer Between Spheres",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-03T03:57:06.528Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14"
        },
        {
          "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5"
        },
        {
          "url": "https://github.com/roundcube/roundcubemail/commit/82ab5eca7b332fce7a174b2b987f0957a66377cd"
        },
        {
          "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.6.14"
        },
        {
          "url": "https://github.com/roundcube/roundcubemail/commit/39471343ee081ce1d31696c456a2c163462daae3"
        },
        {
          "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.5.14"
        },
        {
          "url": "https://github.com/roundcube/roundcubemail/commit/1a63e01542bff42aaa71c00c4c279a09ef31f20c"
        }
      ],
      "x_generator": {
        "engine": "CVE-Request-form 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-35543",
    "datePublished": "2026-04-03T03:57:06.528Z",
    "dateReserved": "2026-04-03T03:57:05.990Z",
    "dateUpdated": "2026-04-03T12:50:54.031Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-35543",
      "date": "2026-07-30",
      "epss": "0.00402",
      "percentile": "0.32992"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-35543\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2026-04-03T05:16:22.637\",\"lastModified\":\"2026-07-24T21:10:00.143\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed via SVG content (with animate attributes) in an e-mail message. This may lead to information disclosure or access-control bypass.\"},{\"lang\":\"es\",\"value\":\"Se descubri\u00f3 un problema en Roundcube Webmail antes de las versiones 1.5.14 y 1.6.14. La funci\u00f3n de bloqueo de im\u00e1genes remotas puede ser eludida a trav\u00e9s de contenido SVG (con atributos animate) en un mensaje de correo electr\u00f3nico. Esto puede conducir a la revelaci\u00f3n de informaci\u00f3n o a la elusi\u00f3n del control de acceso.\"}],\"affected\":[{\"source\":\"cve@mitre.org\",\"affectedData\":[{\"vendor\":\"Roundcube\",\"product\":\"Webmail\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"1.5.14\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"1.6.0\",\"lessThan\":\"1.6.14\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"cve@mitre.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-04-03T12:50:45.786052Z\",\"id\":\"CVE-2026-35543\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"yes\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"cve@mitre.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-669\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.5.14\",\"matchCriteriaId\":\"40F75FD7-CF6D-4DC4-A33D-625D0F02FAB3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.6.0\",\"versionEndExcluding\":\"1.6.14\",\"matchCriteriaId\":\"AF4B6448-D4F5-4680-B32C-9366630E9485\"}]}]}],\"references\":[{\"url\":\"https://github.com/roundcube/roundcubemail/commit/1a63e01542bff42aaa71c00c4c279a09ef31f20c\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/roundcube/roundcubemail/commit/39471343ee081ce1d31696c456a2c163462daae3\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/roundcube/roundcubemail/commit/82ab5eca7b332fce7a174b2b987f0957a66377cd\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/roundcube/roundcubemail/releases/tag/1.5.14\",\"source\":\"cve@mitre.org\",\"tags\":[\"Release Notes\"]},{\"url\":\"https://github.com/roundcube/roundcubemail/releases/tag/1.6.14\",\"source\":\"cve@mitre.org\",\"tags\":[\"Release Notes\"]},{\"url\":\"https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5\",\"source\":\"cve@mitre.org\",\"tags\":[\"Release Notes\"]},{\"url\":\"https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2026-06-28T07:31:52+00:00",
      "cve": "CVE-2026-35543",
      "id": "CVE-2026-35543",
      "initial_release_date": "2026-04-03T03:57:06.528000+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "roundcubemail: Roundcube Webmail: Information disclosure and access-control bypass via animated SVG in email",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35543.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-35543\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-03T12:50:45.786052Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-03T12:50:50.981Z\"}}], \"cna\": {\"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Roundcube\", \"product\": \"Webmail\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"1.5.14\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"1.6.0\", \"lessThan\": \"1.6.14\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14\"}, {\"url\": \"https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5\"}, {\"url\": \"https://github.com/roundcube/roundcubemail/commit/82ab5eca7b332fce7a174b2b987f0957a66377cd\"}, {\"url\": \"https://github.com/roundcube/roundcubemail/releases/tag/1.6.14\"}, {\"url\": \"https://github.com/roundcube/roundcubemail/commit/39471343ee081ce1d31696c456a2c163462daae3\"}, {\"url\": \"https://github.com/roundcube/roundcubemail/releases/tag/1.5.14\"}, {\"url\": \"https://github.com/roundcube/roundcubemail/commit/1a63e01542bff42aaa71c00c4c279a09ef31f20c\"}], \"x_generator\": {\"engine\": \"CVE-Request-form 0.0.1\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed via SVG content (with animate attributes) in an e-mail message. This may lead to information disclosure or access-control bypass.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-669\", \"description\": \"CWE-669 Incorrect Resource Transfer Between Spheres\"}]}], \"providerMetadata\": {\"orgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"shortName\": \"mitre\", \"dateUpdated\": \"2026-04-03T03:57:06.528Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-35543\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-03T12:50:54.031Z\", \"dateReserved\": \"2026-04-03T03:57:05.990Z\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2026-04-03T03:57:06.528Z\", \"assignerShortName\": \"mitre\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.