Vulnerability Details : CVE-2023-2808
Mattermost fails to normalize UTF confusable characters when determining if a preview should be generated for a hyperlink, allowing an attacker to trigger link preview on a disallowed domain using a specially crafted link.
Vulnerability category: Input validation
Products affected by CVE-2023-2808
- cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*
- cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*
- cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-2808
0.17%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 39 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-2808
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
3.9
|
1.4
|
NIST | |
|
4.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
2.8
|
1.4
|
Mattermost, Inc. |
CWE ids for CVE-2023-2808
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: responsibledisclosure@mattermost.com (Secondary)
References for CVE-2023-2808
-
https://mattermost.com/security-updates/
Security Updates - Mattermost - Open Source, On-Prem or Private Cloud MessagingVendor Advisory
Jump to