Vulnerability · Published Jun 11, 2021 · Assigned by hackerone
CVE-2021-22896
Medium 4.3
In plain English
A medium-severity missing authorization in Nextcloud Mail. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities).
Severity (CVSS NVD)4.3Medium
Exploit odds (30 days)1.0%top 37.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Nextcloud Mail before 1.9.5 suffers from improper access control due to a missing permission check allowing other authenticated users to create mail aliases for other users.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | Nextcloud Mail | Fixed in 1.9.5 |
Weakness: CWE-862
References
- https://hackerone.com/reports/1129996 x_refsource_MISC
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3 x_refsource_MISC
- https://github.com/nextcloud/mail/pull/4864 x_refsource_MISC
- https://github.com/nextcloud/mail/releases/tag/v1.9.5 x_refsource_MISC