4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:S/C:N/I:P/A:N
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
0.001 Low
EPSS
Percentile
30.6%
The Nextcloud Mail application does by default not render images in emails to not leak the read state. The privacy filter failed to filter images with a background-image
CSS attribute.
Note that the images were still passed through the Nextcloud image proxy, and thus there was no IP leakage.
It is recommended that the Nextcloud Mail application is upgraded to 1.9.6 or 1.10.0
None.
If you have any questions or comments about this advisory:
CPE | Name | Operator | Version |
---|---|---|---|
nextcloud mail | lt | 1.9.6 | |
nextcloud mail | lt | 1.10.0 |
4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:S/C:N/I:P/A:N
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
0.001 Low
EPSS
Percentile
30.6%