cvelistv5 - cve-2026-10631

CVE-2026-10631 (GCVE-0-2026-10631)

Vulnerability from cvelistv5

Published

2026-10-08 16:25

Modified

2026-10-08 19:11

Severity ?

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CWE

CWE-639 - Authorization bypass through User-Controlled key

Summary

An authorization bypass in the EWS FindItem handler of Zimbra Collaboration Suite 10.1.0 through 10.1.19 allows an authenticated user with EWS enabled to read complete mailbox items, including raw MIME and attachments, from arbitrary local accounts without a share or delegation grant.

References

URL

Tags

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

vendor-advisory

Impacted products

	Vendor	Product	Version
	Zimbra	Zimbra Collaboration Suite	Version: 0 ≤

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-10631",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-08T19:11:03.655656Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-08T19:11:17.411Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Zimbra Collaboration Suite",
          "vendor": "Zimbra",
          "versions": [
            {
              "lessThan": "10.1.20",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Jonah Burgess (CryptoCat), Senior Security Researcher, Rapid7"
        }
      ],
      "datePublic": "2026-10-08T16:16:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "An authorization bypass in the EWS FindItem handler of Zimbra Collaboration Suite 10.1.0 through 10.1.19 allows an authenticated user with EWS enabled to read complete mailbox items, including raw MIME and attachments, from arbitrary local accounts without a share or delegation grant."
            }
          ],
          "value": "An authorization bypass in the EWS FindItem handler of Zimbra Collaboration Suite 10.1.0 through 10.1.19 allows an authenticated user with EWS enabled to read complete mailbox items, including raw MIME and attachments, from arbitrary local accounts without a share or delegation grant."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639 Authorization bypass through User-Controlled key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-08T16:25:27.987Z",
        "orgId": "9974b330-7714-4307-a722-5648477acda7",
        "shortName": "rapid7"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Zimbra Collaboration Suite EWS Extension Authorization Bypass via Crafted Composite Folder/Item Identifier",
      "x_generator": {
        "engine": "Vulnogram 1.0.5"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9974b330-7714-4307-a722-5648477acda7",
    "assignerShortName": "rapid7",
    "cveId": "CVE-2026-10631",
    "datePublished": "2026-10-08T16:25:27.987Z",
    "dateReserved": "2026-06-02T14:57:14.369Z",
    "dateUpdated": "2026-10-08T19:11:17.411Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-10631\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-08T19:11:03.655656Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-08T19:11:10.655Z\"}}], \"cna\": {\"title\": \"Zimbra Collaboration Suite EWS Extension Authorization Bypass via Crafted Composite Folder/Item Identifier\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Jonah Burgess (CryptoCat), Senior Security Researcher, Rapid7\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Zimbra\", \"product\": \"Zimbra Collaboration Suite\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"10.1.20\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2026-10-08T16:16:00.000Z\", \"references\": [{\"url\": \"https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories\", \"tags\": [\"vendor-advisory\"]}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.5\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"An authorization bypass in the EWS FindItem handler of Zimbra Collaboration Suite 10.1.0 through 10.1.19 allows an authenticated user with EWS enabled to read complete mailbox items, including raw MIME and attachments, from arbitrary local accounts without a share or delegation grant.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"An authorization bypass in the EWS FindItem handler of Zimbra Collaboration Suite 10.1.0 through 10.1.19 allows an authenticated user with EWS enabled to read complete mailbox items, including raw MIME and attachments, from arbitrary local accounts without a share or delegation grant.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-639\", \"description\": \"CWE-639 Authorization bypass through User-Controlled key\"}]}], \"providerMetadata\": {\"orgId\": \"9974b330-7714-4307-a722-5648477acda7\", \"shortName\": \"rapid7\", \"dateUpdated\": \"2026-10-08T16:25:27.987Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-10631\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-08T19:11:17.411Z\", \"dateReserved\": \"2026-06-02T14:57:14.369Z\", \"assignerOrgId\": \"9974b330-7714-4307-a722-5648477acda7\", \"datePublished\": \"2026-10-08T16:25:27.987Z\", \"assignerShortName\": \"rapid7\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

CERTFR-2026-AVI-1041

Vulnerability from certfr_avis

De multiples vulnérabilités ont été découvertes dans Synacor Zimbra Collaboration. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une falsification de requêtes côté serveur (SSRF) et une injection de code indirecte à distance (XSS).

L'ENISA indique que la vulnérabilité CVE-2026-73570 est activement exploitée.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

	Vendor	Product	Description
	Synacor	Zimbra Collaboration	Zimbra Collaboration versions antérieures à 10.1.20

References

Title

Publication Time

Tags

Bulletin de sécurité Zimbra	2026-08-13	vendor-advisory
ENISA EUVD	-	other

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Zimbra Collaboration versions ant\u00e9rieures \u00e0 10.1.20",
      "product": {
        "name": "Zimbra Collaboration",
        "vendor": {
          "name": "Synacor",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2026-50055",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-50055"
    },
    {
      "name": "CVE-2026-73570",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-73570"
    },
    {
      "name": "CVE-2026-10631",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-10631"
    },
    {
      "name": "CVE-2026-50054",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-50054"
    }
  ],
  "initial_release_date": "2026-08-19T00:00:00",
  "last_revision_date": "2026-08-19T00:00:00",
  "links": [
    {
      "title": "ENISA EUVD",
      "url": "https://euvd.enisa.europa.eu/vulnerability/CVE-2026-73570"
    }
  ],
  "reference": "CERTFR-2026-AVI-1041",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-08-19T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Injection de code indirecte \u00e0 distance (XSS)"
    },
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    },
    {
      "description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
    },
    {
      "description": "Falsification de requ\u00eates c\u00f4t\u00e9 serveur (SSRF)"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Synacor Zimbra Collaboration. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance, une falsification de requ\u00eates c\u00f4t\u00e9 serveur (SSRF) et une injection de code indirecte \u00e0 distance (XSS).\n\nL\u0027ENISA indique que la vuln\u00e9rabilit\u00e9 CVE-2026-73570 est activement exploit\u00e9e.",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans Synacor Zimbra Collaboration",
  "vendor_advisories": [
    {
      "published_at": "2026-08-13",
      "title": "Bulletin de s\u00e9curit\u00e9 Zimbra",
      "url": "https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories"
    }
  ]
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

CVE-2026-10631 (GCVE-0-2026-10631)

Vulnerability from cvelistv5

CERTFR-2026-AVI-1041

Vulnerability from certfr_avis

Solutions

Tags

Sightings

Nomenclature