VulnerabilityModified
CVE-2021-22896
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.
MEDIUM 4.3EPSS 0.99%
Does this matter?
Lower severity and a low EPSS score (0.99%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 0.99% probability · 61th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-862
- Affected
- nextcloud/nextcloud
- Source
- support@hackerone.com
References
- https://github.com/nextcloud/mail/pull/4864Patch, Third Party Advisory
- https://github.com/nextcloud/mail/releases/tag/v1.9.5Release Notes, Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3Third Party Advisory
- https://hackerone.com/reports/1129996Third Party Advisory
- https://github.com/nextcloud/mail/pull/4864Patch, Third Party Advisory
- https://github.com/nextcloud/mail/releases/tag/v1.9.5Release Notes, Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3Third Party Advisory
- https://hackerone.com/reports/1129996Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.