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CVE-2026-62323

Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, ViewerSessionValidation uses only the session-id prefix of a WOPI access token and does not enforce the requested viewer action, allowing a malicious or compromised WOPI viewer with a view session to forge the token suffix and invoke WOPI write routes for the underlying file. This issue is fixed in version 4.17.0.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ecbe0a5067ea36cf8c9035e7d3d78001a8611fdd65a93c33706631e1443cb160
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"cloudreve","vendor":"cloudreve","versions":[{"status":"affected","version":"< 4.17.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:83c600a53d830483a9346ca099d0ac6786d682193917fbb48c96c61b7069f12a · sha256:721916f42f0667ba… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:83c600a53d830483a9346ca099d0ac6786d682193917fbb48c96c61b7069f12a · sha256:721916f42f0667ba… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:83c600a53d830483a9346ca099d0ac6786d682193917fbb48c96c61b7069f12a · sha256:721916f42f0667ba… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/cloudreve/cloudreve/commit/f3347130ac48f2ff996af9ef66c97be2dda9cba9","tags":["x_refsource_MISC"],"url":"https://github.com/cloudreve/cloudreve/commit/f3347130ac48f2ff996af9ef66c97be2dda9cba9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:83c600a53d830483a9346ca099d0ac6786d682193917fbb48c96c61b7069f12a · sha256:721916f42f0667ba… · /containers/cna/references/1
{"name":"https://github.com/cloudreve/cloudreve/releases/tag/4.17.0","tags":["x_refsource_MISC"],"url":"https://github.com/cloudreve/cloudreve/releases/tag/4.17.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:83c600a53d830483a9346ca099d0ac6786d682193917fbb48c96c61b7069f12a · sha256:721916f42f0667ba… · /containers/cna/references/2
{"tags":["exploit"],"url":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-c3jm-gv5r-9wcp"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:83c600a53d830483a9346ca099d0ac6786d682193917fbb48c96c61b7069f12a · sha256:721916f42f0667ba… · /containers/adp/0/references/0
{"name":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-c3jm-gv5r-9wcp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-c3jm-gv5r-9wcp"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:83c600a53d830483a9346ca099d0ac6786d682193917fbb48c96c61b7069f12a · sha256:721916f42f0667ba… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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