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MattermostCVELIST:CVE-2021-37860

HistorySep 22, 2021 - 4:40 p.m.

CVE-2021-37860

2021-09-2216:40:43

CWE-79

Mattermost

www.cve.org

mattermost

clipboard sanitization

vulnerability

web script

csp

CVSS3

3.7

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.001

Percentile

25.9%

JSON

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.

CNA Affected

[
  {
    "product": "Mattermost ",
    "vendor": "Mattermost ",
    "versions": [
      {
        "lessThanOrEqual": "5.38",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

References

mattermost.com/security-updates/