Published: 12/07/2021 Updated: 25/10/2022

CVSS v2 Base Score: 4 | Impact Score: 2.9 | Exploitability Score: 8

CVSS v3 Base Score: 4.3 | Impact Score: 1.4 | Exploitability Score: 2.8

VMScore: 356

Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N

Nextcloud Mail is a mail app for Nextcloud. In versions before 1.9.6, the Nextcloud Mail application does not, by default, 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. The issue was patched in version 1.9.6 and 1.10.0. No workarounds are known to exist.

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nextcloud nextcloud mail

In versions prior to 196, the Nextcloud Mail application does not, by default, render images in emails to not leak the read state The privacy filter failed to filter images with `background-image` CSS attribute Note that the images were still passed through the Nextcloud image proxy, and thus there was no IP leakage ...

NVD-CWE-Other https://hackerone.com/reports/1215251 https://github.com/nextcloud/mail/pull/5189 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xxp4-44xc-8crh https://nvd.nist.gov https://security.archlinux.org/CVE-2021-32707

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CVE-2021-32707

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