CVE-2026-104875 (GCVE-0-2026-104875)

Vulnerability from cvelistv5 – Published: 2026-10-13 19:10 – Updated: 2026-10-13 19:10
VLAI
Title
Ente: Accepted emergency contact can bypass the recovery notice period
Summary
Ente provides end-to-end encrypted cloud services and security tools. Prior to server image 2026.07.09, the POST /emergency-contacts/approve-recovery endpoint authorized approval using a client-supplied userID and updated an emergency recovery session using only its client-supplied recovery-session UUID. An accepted emergency contact could submit the contact's own identifier, transition the victim's session from WAITING to READY, clear wait_till, retrieve recovery information, and continue account recovery before the owner-configured notice period expired. Exploitation of the approval bypass required the victim to have previously added and accepted the attacker as an emergency contact, and it did not create recovery rights for an arbitrary account. Separately, the same insufficiently scoped update pattern affected the reject and stop recovery transitions, allowing a user who knew another recovery-session UUID to potentially cancel a session to which the user was not a party. This issue is fixed in server image 2026.07.09.
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
Impacted products
Vendor Product Version CPE status
ente ente Affected: < 0.1.18
guessed Create a notification for this product.
ente ghcr.io/ente/server Affected: < 2026.07.09
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "ente",
          "vendor": "ente",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.1.18"
            }
          ]
        },
        {
          "product": "ghcr.io/ente/server",
          "vendor": "ente",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2026.07.09"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Ente provides end-to-end encrypted cloud services and security tools. Prior to server image 2026.07.09, the POST /emergency-contacts/approve-recovery endpoint authorized approval using a client-supplied userID and updated an emergency recovery session using only its client-supplied recovery-session UUID. An accepted emergency contact could submit the contact\u0027s own identifier, transition the victim\u0027s session from WAITING to READY, clear wait_till, retrieve recovery information, and continue account recovery before the owner-configured notice period expired. Exploitation of the approval bypass required the victim to have previously added and accepted the attacker as an emergency contact, and it did not create recovery rights for an arbitrary account. Separately, the same insufficiently scoped update pattern affected the reject and stop recovery transitions, allowing a user who knew another recovery-session UUID to potentially cancel a session to which the user was not a party. This issue is fixed in server image 2026.07.09."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-13T19:10:06.908Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/ente/ente/security/advisories/GHSA-2hxj-953x-c2vw",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/ente/ente/security/advisories/GHSA-2hxj-953x-c2vw"
        },
        {
          "name": "https://github.com/ente/ente/pull/11311",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ente/ente/pull/11311"
        },
        {
          "name": "https://github.com/ente/ente/pull/11342",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ente/ente/pull/11342"
        },
        {
          "name": "https://github.com/ente/ente/commit/1fc4956f90277076559c16dedbfad10cb4d1227b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ente/ente/commit/1fc4956f90277076559c16dedbfad10cb4d1227b"
        },
        {
          "name": "https://github.com/ente/ente/commit/b3fa9f566466ac3660e276a67621130d684957e7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ente/ente/commit/b3fa9f566466ac3660e276a67621130d684957e7"
        }
      ],
      "source": {
        "advisory": "GHSA-2hxj-953x-c2vw",
        "discovery": "UNKNOWN"
      },
      "title": "Ente: Accepted emergency contact can bypass the recovery notice period"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-104875",
    "datePublished": "2026-10-13T19:10:06.908Z",
    "dateReserved": "2026-10-02T14:59:11.775Z",
    "dateUpdated": "2026-10-13T19:10:06.908Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-104875",
      "date": "2026-10-16",
      "epss": "0.00348",
      "percentile": "0.26831"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "ente",
                "vendor": "ente",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 0.1.18"
                  }
                ]
              },
              {
                "product": "ghcr.io/ente/server",
                "vendor": "ente",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 2026.07.09"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Ente provides end-to-end encrypted cloud services and security tools. Prior to server image 2026.07.09, the POST /emergency-contacts/approve-recovery endpoint authorized approval using a client-supplied userID and updated an emergency recovery session using only its client-supplied recovery-session UUID. An accepted emergency contact could submit the contact\u0027s own identifier, transition the victim\u0027s session from WAITING to READY, clear wait_till, retrieve recovery information, and continue account recovery before the owner-configured notice period expired. Exploitation of the approval bypass required the victim to have previously added and accepted the attacker as an emergency contact, and it did not create recovery rights for an arbitrary account. Separately, the same insufficiently scoped update pattern affected the reject and stop recovery transitions, allowing a user who knew another recovery-session UUID to potentially cancel a session to which the user was not a party. This issue is fixed in server image 2026.07.09."
          }
        ],
        "id": "CVE-2026-104875",
        "lastModified": "2026-10-16T20:04:29.760",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.1,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.2,
              "impactScore": 5.9,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-13T19:17:55.863",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/ente/ente/commit/1fc4956f90277076559c16dedbfad10cb4d1227b"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/ente/ente/commit/b3fa9f566466ac3660e276a67621130d684957e7"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/ente/ente/pull/11311"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/ente/ente/pull/11342"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/ente/ente/security/advisories/GHSA-2hxj-953x-c2vw"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-639"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
Events included in the timeline

Loading timeline…


    Loading…

    Loading…

    Loading…

    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.