CVE Explorer

CVE-2026-45543

Nextcloud is an open source content collaboration platform. From version 4.3.0 to before version 5.2.7, a removed collaborator retains unauthorized read access to uploaded respondent files for the affected form. The scope is limited to uploaded files for forms where that user previously had results access. This issue has been patched in version 5.2.7.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:246cbfbe51cee20390f23ed80082225642dd0a2b27cce4e460529cee84a1eb38

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"security-advisories","vendor":"nextcloud","versions":[{"status":"affected","version":">= 4.3.0, < 5.2.7"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:20bb4663f149cec1cfd6e27647d1f9787142ffa746fb3d080b5ff1b29c3676f4 · sha256:82028a8eb70d27e8… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:20bb4663f149cec1cfd6e27647d1f9787142ffa746fb3d080b5ff1b29c3676f4 · sha256:82028a8eb70d27e8… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-552","description":"CWE-552: Files or Directories Accessible to External Parties","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:20bb4663f149cec1cfd6e27647d1f9787142ffa746fb3d080b5ff1b29c3676f4 · sha256:82028a8eb70d27e8… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/nextcloud/forms/pull/3291","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/forms/pull/3291"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:20bb4663f149cec1cfd6e27647d1f9787142ffa746fb3d080b5ff1b29c3676f4 · sha256:82028a8eb70d27e8… · /containers/cna/references/1

{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-q4fw-6jf8-5vhh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-q4fw-6jf8-5vhh"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:20bb4663f149cec1cfd6e27647d1f9787142ffa746fb3d080b5ff1b29c3676f4 · sha256:82028a8eb70d27e8… · /containers/cna/references/0

{"name":"https://hackerone.com/reports/3617352","tags":["x_refsource_MISC"],"url":"https://hackerone.com/reports/3617352"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:20bb4663f149cec1cfd6e27647d1f9787142ffa746fb3d080b5ff1b29c3676f4 · sha256:82028a8eb70d27e8… · /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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