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CVE-2021-37860

Good to know:

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Date: September 22, 2021

Mattermost 5.38 and earlier fails to sufficiently sanitize clipboard contents, which allows a user-assisted attacker to inject arbitrary web script in product deployments that explicitly disable the default CSP.

Language: Go

Severity Score

Related Resources (7)

https://nvd.nist.gov/vuln/detail/CVE-2021-37860
https://mattermost.com/security-updates/
https://docs.mattermost.com/install/self-managed-changelog.html#release-v5-39-quality-release
https://github.com/advisories/GHSA-hv5f-73mr-7vvj
https://github.com/mattermost/mattermost-server
https://mattermost.com/security-updates
https://www.mend.io/vulnerability-database/CVE-2021-37860

Severity Score

Weakness Type (CWE)

Cross-Site Scripting (XSS)

CWE-79

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): HIGH
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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