CVE Explorer
CVE-2026-45159
Nextcloud is an open source content collaboration platform. From versions 1.15.0 to before 1.15.4, 1.16.0 to before 1.16.3, 1.17.0 to before 1.17.1, and 1.18.0 to before 1.18.1, a malicious user with access to an end-to-end encrypted files drop link was able to also drop files into other end-to-end encrypted folders of the share owner. Reading and modifying of other files was not possible. This issue has been patched in versions 1.15.4, 1.16.3, 1.17.1, 1.18.1, and 2.0.0-rc.7.
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":">= 1.15.0, < 1.15.4"},{"status":"affected","version":">= 1.16.0, < 1.16.3"},{"status":"affected","version":">= 1.17.0, < 1.17.1"},{"status":"affected","version":">= 1.18.0, < 1.18.1"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:66e0484fd44a76519d5c715550dc309227ab1267cb23be919e8c7848307173b6 · sha256:7879deac51e92933… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.5,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:66e0484fd44a76519d5c715550dc309227ab1267cb23be919e8c7848307173b6 · sha256:7879deac51e92933… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:66e0484fd44a76519d5c715550dc309227ab1267cb23be919e8c7848307173b6 · sha256:7879deac51e92933… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/nextcloud/end_to_end_encryption/pull/1395","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/end_to_end_encryption/pull/1395"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:66e0484fd44a76519d5c715550dc309227ab1267cb23be919e8c7848307173b6 · sha256:7879deac51e92933… · /containers/cna/references/1
{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-p3qw-7gwx-wg24","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-p3qw-7gwx-wg24"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:66e0484fd44a76519d5c715550dc309227ab1267cb23be919e8c7848307173b6 · sha256:7879deac51e92933… · /containers/cna/references/0
{"name":"https://hackerone.com/reports/3304830","tags":["x_refsource_MISC"],"url":"https://hackerone.com/reports/3304830"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:66e0484fd44a76519d5c715550dc309227ab1267cb23be919e8c7848307173b6 · sha256:7879deac51e92933… · /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.