Vulnerability · Published Mar 31, 2023 · Assigned by Mattermost
CVE-2023-1776Stored XSS via SVG attachment on Boards
High 7.3
In plain English
A high-severity cross-site scripting in Mattermost from Mattermost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)0.4%top 61.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Boards in Mattermost allows an attacker to upload a malicious SVG image file as an attachment to a card and share it using a direct link to the file.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 7.7.2 | GHSA-63f2-6959-2pxj |
| Go | github.com/mattermost/mattermost-server | 7.1.6 | GHSA-63f2-6959-2pxj |
| Go | github.com/mattermost/mattermost-server | 7.8.1 | GHSA-63f2-6959-2pxj |
| Go | github.com/mattermost/mattermost-server/v5 | 7.1.6 | GHSA-63f2-6959-2pxj |
| Go | github.com/mattermost/mattermost-server/v6 | 7.1.6 | GHSA-63f2-6959-2pxj |
| Go | github.com/mattermost/mattermost-server/v6 | 7.1.6 | GHSA-63f2-6959-2pxj |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 3.3.0 – through 7.7.13.3.0 – through 7.1.53.3.0 – before 7.8.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N