CVE Explorer
CVE-2026-45155
Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.7 and 33.0.0 to before 33.0.1, a missing access check on API level allowed to add unknown circles by their ID directly to other circles. Since circle IDs have 62^15 complexity by default this is still unlikely to be executable at will, but if access to an ID was available via another source, memberships could be tracked like this. It is recommended that the Nextcloud Server is upgr
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, < 32.0.7"},{"status":"affected","version":">= 33.0.0, < 33.0.1"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:b94d2c13ed943a9cf59098e135c45e4662f8672b58d1c095ffb941c890cd1642 · sha256:688d54030f9a56af… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":2.6,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:b94d2c13ed943a9cf59098e135c45e4662f8672b58d1c095ffb941c890cd1642 · sha256:688d54030f9a56af… · /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:b94d2c13ed943a9cf59098e135c45e4662f8672b58d1c095ffb941c890cd1642 · sha256:688d54030f9a56af… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/nextcloud/circles/pull/2401","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/circles/pull/2401"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:b94d2c13ed943a9cf59098e135c45e4662f8672b58d1c095ffb941c890cd1642 · sha256:688d54030f9a56af… · /containers/cna/references/1
{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xpgv-grf9-gm7x","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xpgv-grf9-gm7x"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:b94d2c13ed943a9cf59098e135c45e4662f8672b58d1c095ffb941c890cd1642 · sha256:688d54030f9a56af… · /containers/cna/references/0
{"name":"https://hackerone.com/reports/3511998","tags":["x_refsource_MISC"],"url":"https://hackerone.com/reports/3511998"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:b94d2c13ed943a9cf59098e135c45e4662f8672b58d1c095ffb941c890cd1642 · sha256:688d54030f9a56af… · /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.