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CVE-2026-45157

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, when a malicious user has access to a file share of a user, they could use this share token to also access the chunking upload directly and see temporary part files during on going uploads. It is recommended that the Nextcloud Server is upgraded to 32.0.9 or 33.0.3. It is recommended that the Nextcloud Enterprise Server is upgraded to 26.0.13.26, 27.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1c516c8a463ae1918dc9001a70744551af119c788a6137c06a20795e8110dbf7
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, < 32.0.9"},{"status":"affected","version":">= 33.0.0, < 33.0.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f2a139d4ee247ba27d916460f386278dca82e98b8680f953e1a1fdd446ee0562 · sha256:89faab88929ccada… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f2a139d4ee247ba27d916460f386278dca82e98b8680f953e1a1fdd446ee0562 · sha256:89faab88929ccada… · /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:f2a139d4ee247ba27d916460f386278dca82e98b8680f953e1a1fdd446ee0562 · sha256:89faab88929ccada… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-45pj-p7x7-4mhc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-45pj-p7x7-4mhc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f2a139d4ee247ba27d916460f386278dca82e98b8680f953e1a1fdd446ee0562 · sha256:89faab88929ccada… · /containers/cna/references/0
{"name":"https://github.com/nextcloud/server/pull/59780","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/server/pull/59780"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f2a139d4ee247ba27d916460f386278dca82e98b8680f953e1a1fdd446ee0562 · sha256:89faab88929ccada… · /containers/cna/references/1
{"name":"https://hackerone.com/reports/3483708","tags":["x_refsource_MISC"],"url":"https://hackerone.com/reports/3483708"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f2a139d4ee247ba27d916460f386278dca82e98b8680f953e1a1fdd446ee0562 · sha256:89faab88929ccada… · /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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