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cve[email protected]CVE-2021-39220
HistoryOct 25, 2021 - 7:15 p.m.

CVE-2021-39220

2021-10-2519:15:09
CWE-20
CWE-200
web.nvd.nist.gov
19
2
nextcloud
mail application
privacy filter
image rendering
cve-2021-39220
security update
upgrade

3.5 Low

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:S/C:P/I:N/A:N

3.5 Low

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

3.9 Low

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

25.0%

Nextcloud is an open-source, self-hosted productivity platform The Nextcloud Mail application prior to versions 1.10.4 and 1.11.0 does by default not render images in emails to not leak the read state or user IP. The privacy filter failed to filter images with a relative protocol. It is recommended that the Nextcloud Mail application is upgraded to 1.10.4 or 1.11.0. There are no known workarounds aside from upgrading.

Affected configurations

Vulners
NVD
Node
nextcloudnextcloudRange<1.11.0
VendorProductVersionCPE
nextcloudnextcloud*cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:*

CNA Affected

[
  {
    "product": "security-advisories",
    "vendor": "nextcloud",
    "versions": [
      {
        "status": "affected",
        "version": "< 1.10.4, < 1.11.0"
      }
    ]
  }
]

Social References

More

3.5 Low

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:S/C:P/I:N/A:N

3.5 Low

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

3.9 Low

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

25.0%

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