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CVE-2023-1776
Stored XSS via SVG attachment on Boards
High7.3EPSS 0.45%
- Published
- Updated
- Reserved
- Assigned by
- Mattermost
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| MattermostCNA (assigner) | 3.1 | High7.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.45% · top 61% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.3.
Weakness
Affected products
- affected 3.3.0 – ≤ 7.7.1
- affected 3.3.0 – ≤ 7.1.5
- affected 3.3.0 – < 7.8.0
- unaffected 7.8.0
- unaffected 7.7.2
- unaffected 7.1.6
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/mattermost/mattermost-serverGHSA-63f2-6959-2pxj (opens in a new tab)
- Gogithub.com/mattermost/mattermost-server/v5GHSA-63f2-6959-2pxj (opens in a new tab)
- Gogithub.com/mattermost/mattermost-server/v6GHSA-63f2-6959-2pxj (opens in a new tab)
What to do
Solution: Update Mattermost to version v7.8.0, v7.1.6, v7.7.2, or higher.
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-63f2-6959-2pxj (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-1776)Record last updated .