Medium severity · published Mar 15, 2023
CVE-2023-1421
A reflected cross-site scripting vulnerability in the OAuth flow completion endpoints in Mattermost allows an attacker to send AJAX requests on behalf of the victim via sharing a…
6.1
CVSS
0.4%
EPSS
No
On KEV
Description
A reflected cross-site scripting vulnerability in the OAuth flow completion endpoints in Mattermost allows an attacker to send AJAX requests on behalf of the victim via sharing a crafted link with a malicious state parameter.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MS
Mattermost Server · Mattermost
5.32.0 before 7.7.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-1421
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-1421
Vendor Advisory
https://mattermost.com/security-updates/
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