CVE-2025-66546 (GCVE-0-2025-66546)
Vulnerability from cvelistv5
Published
2025-12-05 16:49
Modified
2025-12-05 18:32
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Summary
Nextcloud Calendar is a calendar app for Nextcloud. Prior to 4.7.19, 5.5.6, and 6.0.1, the calendar app allowed blindly booking appointments with a squential ID without known the appointment token. This vulnerability is fixed in 4.7.19, 5.5.6, and 6.0.1.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| nextcloud | security-advisories |
Version: >= 6.0.0-rc.1, < 6.0.1 Version: >= 5.0.0-rc.1, < 5.5.6 Version: >= 3.0.0-beta1, < 4.7.19 |
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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