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CVE-2026-45264

Nextcloud is an open source content collaboration platform. From versions 17.0.0 to before 17.0.15, 18.0.0 to before 18.1.12, 19.0.0 to before 19.1.16, 20.0.0 to before 20.1.11, and 21.0.0 to before 21.0.4, a user with READ and CREATE permission, but no UPDATE permission for a team folder can rename files in the team folder. This issue has been patched in versions 17.0.15, 18.1.12, 19.1.16, 20.1.11, and 21.0.4.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:238845939cd97d1aa1829d33e378db429dae3aeb9e960e57a9e311a300d06fe5
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":">= 17.0.0, < 17.0.15"},{"status":"affected","version":">= 18.0.0, < 18.1.12"},{"status":"affected","version":">= 19.0.0, < 19.1.16"},{"status":"affected","version":">= 20.0.0, < 20.1.11"},{"status":"affected","version":">= 21.0.0, < 21.0.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f7b2393d777acba1f8f366982d3f46330d1cd59d4c7758d07d7f8b9fbc4e7c84 · sha256:d63c423a825280a9… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f7b2393d777acba1f8f366982d3f46330d1cd59d4c7758d07d7f8b9fbc4e7c84 · sha256:d63c423a825280a9… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f7b2393d777acba1f8f366982d3f46330d1cd59d4c7758d07d7f8b9fbc4e7c84 · sha256:d63c423a825280a9… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/nextcloud/groupfolders/pull/4361","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/groupfolders/pull/4361"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f7b2393d777acba1f8f366982d3f46330d1cd59d4c7758d07d7f8b9fbc4e7c84 · sha256:d63c423a825280a9… · /containers/cna/references/1
{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wx2x-822r-rvmf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wx2x-822r-rvmf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f7b2393d777acba1f8f366982d3f46330d1cd59d4c7758d07d7f8b9fbc4e7c84 · sha256:d63c423a825280a9… · /containers/cna/references/0
{"name":"https://hackerone.com/reports/3540673","tags":["x_refsource_MISC"],"url":"https://hackerone.com/reports/3540673"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f7b2393d777acba1f8f366982d3f46330d1cd59d4c7758d07d7f8b9fbc4e7c84 · sha256:d63c423a825280a9… · /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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