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cvelistMattermostCVELIST:CVE-2023-5522
HistoryOct 17, 2023 - 9:41 a.m.

CVE-2023-5522 Mobile app freezes when receiving a post with hundreds of emojis

2023-10-1709:41:14
CWE-400
Mattermost
www.cve.org
cve-2023-5522
mattermost mobile
markdown elements
attacker
channel
freeze

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

4.9 Medium

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

17.0%

Mattermost Mobile fails to limitย the maximum number of Markdown elements in a post allowing an attacker to send a post with hundreds of emojis to a channel andย freeze the mobile app of users when viewing that particular channel.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThan": "2.8.0",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "2.8.0"
      }
    ]
  }
]

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

4.9 Medium

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

17.0%

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