{"items":[{"id":"NVI-00015398","kind":"vulnerability","title":"Cloudreve WOPI view sessions can write files and WOPI access token secret is ignored","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-c3jm-gv5r-9wcp","CVE-2026-62323"],"plain_summary":"GitHub lists this reviewed advisory for github.com/cloudreve/Cloudreve/v4, github.com/cloudreve/Cloudreve/v3. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-14a1a9f3b48e87f72c280efe98277ec4"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-24T21:18:42.000Z","value":"6.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-640cde5983c7b3579afe8be3469e0f20"},{"kind":"CVSS","as_of":"2026-09-08T20:51:43.490Z","value":"6.3 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-24b6b8d0017090fc75380cbe7769199c"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.306%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.23532. Missing scores are unknown.","source_id":"sr-14a1a9f3b48e87f72c280efe98277ec4"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-640cde5983c7b3579afe8be3469e0f20","url":"https://github.com/advisories/GHSA-c3jm-gv5r-9wcp","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-c3jm-gv5r-9wcp","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T09:59:13.529Z"},{"id":"sr-24b6b8d0017090fc75380cbe7769199c","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62323","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-62323","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T15:07:15.902Z"},{"id":"sr-14a1a9f3b48e87f72c280efe98277ec4","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-62323","publisher":"FIRST EPSS","observed_at":"2026-11-04T23:33:33.057Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-640cde5983c7b3579afe8be3469e0f20"],"technology":"github.com/cloudreve/Cloudreve/v4","known_exclusions":[],"conditions_summary":"## Summary\n\nCloudreve WOPI access tokens are generated as `.`, but the WOPI middleware validates only the session id prefix and never compares the supplied token to the stored token. In addition, a WOPI viewer session does not store or enforce the requested viewer action. A session created for a view or preview action can still call WOPI write routes if the underlying file is writable by the session user.\n\n## Impact\n\nA WOPI integration that is only expected to view a user's file can modify that file through the WOPI write endpoints. If the WOPI URL or session id leaks, the random token suffix does not protect the session because any suffix is accepted for an existing session id.\n\nThis affects deployments that configure WOPI viewers for user files. The attacker primitive is strongest when a malicious or compromised WOPI viewer receives a view-only URL and then writes content back to Cloudreve.\n\n## Affected version\n\nVerified in source and runtime on latest master commit `ba2e870bbd17f1918dd2321de861e453f696d6a3` and latest observed tag `4.16.1`.\n\n## Technical details\n\nCloudreve creates WOPI viewer sessions in `pkg/filemanager/manager/viewer.go`:\n\n```go\nsess","public_affected_ranges":["< 4.0.0-20260626022433-f3347130ac48"]},{"certainty":"source_listed","source_ids":["sr-640cde5983c7b3579afe8be3469e0f20"],"technology":"github.com/cloudreve/Cloudreve/v3","known_exclusions":[],"conditions_summary":"## Summary\n\nCloudreve WOPI access tokens are generated as `.`, but the WOPI middleware validates only the session id prefix and never compares the supplied token to the stored token. In addition, a WOPI viewer session does not store or enforce the requested viewer action. A session created for a view or preview action can still call WOPI write routes if the underlying file is writable by the session user.\n\n## Impact\n\nA WOPI integration that is only expected to view a user's file can modify that file through the WOPI write endpoints. If the WOPI URL or session id leaks, the random token suffix does not protect the session because any suffix is accepted for an existing session id.\n\nThis affects deployments that configure WOPI viewers for user files. The attacker primitive is strongest when a malicious or compromised WOPI viewer receives a view-only URL and then writes content back to Cloudreve.\n\n## Affected version\n\nVerified in source and runtime on latest master commit `ba2e870bbd17f1918dd2321de861e453f696d6a3` and latest observed tag `4.16.1`.\n\n## Technical details\n\nCloudreve creates WOPI viewer sessions in `pkg/filemanager/manager/viewer.go`:\n\n```go\nsess","public_affected_ranges":["<= 3.0.0-20250225100611-da4e44b77af4"]}],"null_published_at":"2026-11-08T19:53:44.041Z","source_updated_at":"2026-07-24T21:18:42.000Z","source_disclosed_at":"2026-07-24T21:18:41.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-03T09:59:13.529Z"},{"id":"NVI-00015398","kind":"vulnerability","title":"Cloudreve WOPI view sessions can write files and WOPI access token secret is ignored","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-c3jm-gv5r-9wcp","CVE-2026-62323"],"plain_summary":"GitHub lists this reviewed advisory for github.com/cloudreve/Cloudreve/v4, github.com/cloudreve/Cloudreve/v3. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-14a1a9f3b48e87f72c280efe98277ec4"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-24T21:18:42.000Z","value":"6.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-640cde5983c7b3579afe8be3469e0f20"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.306%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.23532. Missing scores are unknown.","source_id":"sr-14a1a9f3b48e87f72c280efe98277ec4"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-640cde5983c7b3579afe8be3469e0f20","url":"https://github.com/advisories/GHSA-c3jm-gv5r-9wcp","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-c3jm-gv5r-9wcp","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T09:59:13.529Z"},{"id":"sr-14a1a9f3b48e87f72c280efe98277ec4","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-62323","publisher":"FIRST EPSS","observed_at":"2026-11-04T23:33:33.057Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-640cde5983c7b3579afe8be3469e0f20"],"technology":"github.com/cloudreve/Cloudreve/v4","known_exclusions":[],"conditions_summary":"## Summary\n\nCloudreve WOPI access tokens are generated as `.`, but the WOPI middleware validates only the session id prefix and never compares the supplied token to the stored token. In addition, a WOPI viewer session does not store or enforce the requested viewer action. A session created for a view or preview action can still call WOPI write routes if the underlying file is writable by the session user.\n\n## Impact\n\nA WOPI integration that is only expected to view a user's file can modify that file through the WOPI write endpoints. If the WOPI URL or session id leaks, the random token suffix does not protect the session because any suffix is accepted for an existing session id.\n\nThis affects deployments that configure WOPI viewers for user files. The attacker primitive is strongest when a malicious or compromised WOPI viewer receives a view-only URL and then writes content back to Cloudreve.\n\n## Affected version\n\nVerified in source and runtime on latest master commit `ba2e870bbd17f1918dd2321de861e453f696d6a3` and latest observed tag `4.16.1`.\n\n## Technical details\n\nCloudreve creates WOPI viewer sessions in `pkg/filemanager/manager/viewer.go`:\n\n```go\nsess","public_affected_ranges":["< 4.0.0-20260626022433-f3347130ac48"]},{"certainty":"source_listed","source_ids":["sr-640cde5983c7b3579afe8be3469e0f20"],"technology":"github.com/cloudreve/Cloudreve/v3","known_exclusions":[],"conditions_summary":"## Summary\n\nCloudreve WOPI access tokens are generated as `.`, but the WOPI middleware validates only the session id prefix and never compares the supplied token to the stored token. In addition, a WOPI viewer session does not store or enforce the requested viewer action. A session created for a view or preview action can still call WOPI write routes if the underlying file is writable by the session user.\n\n## Impact\n\nA WOPI integration that is only expected to view a user's file can modify that file through the WOPI write endpoints. If the WOPI URL or session id leaks, the random token suffix does not protect the session because any suffix is accepted for an existing session id.\n\nThis affects deployments that configure WOPI viewers for user files. The attacker primitive is strongest when a malicious or compromised WOPI viewer receives a view-only URL and then writes content back to Cloudreve.\n\n## Affected version\n\nVerified in source and runtime on latest master commit `ba2e870bbd17f1918dd2321de861e453f696d6a3` and latest observed tag `4.16.1`.\n\n## Technical details\n\nCloudreve creates WOPI viewer sessions in `pkg/filemanager/manager/viewer.go`:\n\n```go\nsess","public_affected_ranges":["<= 3.0.0-20250225100611-da4e44b77af4"]}],"null_published_at":"2026-11-08T08:10:32.032Z","source_updated_at":"2026-07-24T21:18:42.000Z","source_disclosed_at":"2026-07-24T21:18:41.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-03T09:59:13.529Z"},{"id":"NVI-00015398","kind":"vulnerability","title":"Cloudreve WOPI view sessions can write files and WOPI access token secret is ignored","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-c3jm-gv5r-9wcp","CVE-2026-62323"],"plain_summary":"GitHub lists this reviewed advisory for github.com/cloudreve/Cloudreve/v4, github.com/cloudreve/Cloudreve/v3. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-640cde5983c7b3579afe8be3469e0f20"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-24T21:18:42.000Z","value":"6.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-640cde5983c7b3579afe8be3469e0f20"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-640cde5983c7b3579afe8be3469e0f20","url":"https://github.com/advisories/GHSA-c3jm-gv5r-9wcp","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-c3jm-gv5r-9wcp","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T09:59:13.529Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-640cde5983c7b3579afe8be3469e0f20"],"technology":"github.com/cloudreve/Cloudreve/v4","known_exclusions":[],"conditions_summary":"## Summary\n\nCloudreve WOPI access tokens are generated as `.`, but the WOPI middleware validates only the session id prefix and never compares the supplied token to the stored token. In addition, a WOPI viewer session does not store or enforce the requested viewer action. A session created for a view or preview action can still call WOPI write routes if the underlying file is writable by the session user.\n\n## Impact\n\nA WOPI integration that is only expected to view a user's file can modify that file through the WOPI write endpoints. If the WOPI URL or session id leaks, the random token suffix does not protect the session because any suffix is accepted for an existing session id.\n\nThis affects deployments that configure WOPI viewers for user files. The attacker primitive is strongest when a malicious or compromised WOPI viewer receives a view-only URL and then writes content back to Cloudreve.\n\n## Affected version\n\nVerified in source and runtime on latest master commit `ba2e870bbd17f1918dd2321de861e453f696d6a3` and latest observed tag `4.16.1`.\n\n## Technical details\n\nCloudreve creates WOPI viewer sessions in `pkg/filemanager/manager/viewer.go`:\n\n```go\nsess","public_affected_ranges":["< 4.0.0-20260626022433-f3347130ac48"]},{"certainty":"source_listed","source_ids":["sr-640cde5983c7b3579afe8be3469e0f20"],"technology":"github.com/cloudreve/Cloudreve/v3","known_exclusions":[],"conditions_summary":"## Summary\n\nCloudreve WOPI access tokens are generated as `.`, but the WOPI middleware validates only the session id prefix and never compares the supplied token to the stored token. In addition, a WOPI viewer session does not store or enforce the requested viewer action. A session created for a view or preview action can still call WOPI write routes if the underlying file is writable by the session user.\n\n## Impact\n\nA WOPI integration that is only expected to view a user's file can modify that file through the WOPI write endpoints. If the WOPI URL or session id leaks, the random token suffix does not protect the session because any suffix is accepted for an existing session id.\n\nThis affects deployments that configure WOPI viewers for user files. The attacker primitive is strongest when a malicious or compromised WOPI viewer receives a view-only URL and then writes content back to Cloudreve.\n\n## Affected version\n\nVerified in source and runtime on latest master commit `ba2e870bbd17f1918dd2321de861e453f696d6a3` and latest observed tag `4.16.1`.\n\n## Technical details\n\nCloudreve creates WOPI viewer sessions in `pkg/filemanager/manager/viewer.go`:\n\n```go\nsess","public_affected_ranges":["<= 3.0.0-20250225100611-da4e44b77af4"]}],"null_published_at":"2026-11-03T10:03:31.362Z","source_updated_at":"2026-07-24T21:18:42.000Z","source_disclosed_at":"2026-07-24T21:18:41.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-03T09:59:13.529Z"}],"next_cursor":null,"snapshot_revision":"42594"}