Medium severity · published Mar 31, 2023
CVE-2023-1777
Information disclosure in linked message previews
5.3
CVSS
0.5%
EPSS
No
On KEV
Description
Mattermost allows an attacker to request a preview of an existing message when creating a new message via the createPost API call, disclosing the contents of the linked message.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mattermost · Mattermost
6.3.0 through 7.7.1; 6.3.0 through 7.1.5; 6.3.0 through 7.8.0 · source: vendor
MS
Mattermost Server · Mattermost
before 7.1.6; 7.7.1; 7.8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-1777
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-1777
Vendor Advisory
https://mattermost.com/security-updates/
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