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CVE-2026-45283

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.2, and 33.0.0 to before 33.0.1, the files_lock app did not properly validate the ownership of files when processing DAV lock and unlock requests. An authenticated user could lock or unlock files belonging to other users by targeting their absolute WebDAV paths. Additionally, lock tokens were disclosed to unauthorized callers in error responses, allowing attackers to remove token-ba
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1f409f49d1a52505f7b1856cfc62f176f6eb89a6828c63c6e54860072b599f14
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"security-advisories","vendor":"nextcloud","versions":[{"status":"affected","version":">= 32.0.0, < 32.0.2"},{"status":"affected","version":">= 33.0.0, < 33.0.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:451f8f45fffcce723707c05ee6f9511ea72151353318871ed131c2b6d911f5c5 · sha256:fa2aed91e97b2a43… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":6.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:451f8f45fffcce723707c05ee6f9511ea72151353318871ed131c2b6d911f5c5 · sha256:fa2aed91e97b2a43… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-287","description":"CWE-287: Improper Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:451f8f45fffcce723707c05ee6f9511ea72151353318871ed131c2b6d911f5c5 · sha256:fa2aed91e97b2a43… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/nextcloud/files_lock/pull/1007","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/files_lock/pull/1007"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:451f8f45fffcce723707c05ee6f9511ea72151353318871ed131c2b6d911f5c5 · sha256:fa2aed91e97b2a43… · /containers/cna/references/1
{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4chh-6mhf-p4jj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4chh-6mhf-p4jj"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:451f8f45fffcce723707c05ee6f9511ea72151353318871ed131c2b6d911f5c5 · sha256:fa2aed91e97b2a43… · /containers/cna/references/0
{"name":"https://hackerone.com/reports/3301553#","tags":["x_refsource_MISC"],"url":"https://hackerone.com/reports/3301553#"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:451f8f45fffcce723707c05ee6f9511ea72151353318871ed131c2b6d911f5c5 · sha256:fa2aed91e97b2a43… · /containers/cna/references/2

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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