Moderate severityNVD Advisory· Published Nov 27, 2023· Updated Jun 3, 2025
Denial of Service via specially crafted block fields in Mattermost Boards
CVE-2023-40703
Description
Mattermost fails to properly limit the characters allowed in different fields of a block in Mattermost Boards allowing a attacker to consume excessive resources, possibly leading to Denial of Service, by patching the field of a block using a specially crafted string.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/mattermost/mattermost/server/v8Go | >= 9.1.0, < 9.1.1 | 9.1.1 |
github.com/mattermost/mattermost/server/v8Go | >= 9.0.0, < 9.0.2 | 9.0.2 |
github.com/mattermost/mattermost/server/v8Go | < 8.1.4 | 8.1.4 |
github.com/mattermost/mattermost-server/v6Go | < 7.8.13 | 7.8.13 |
Affected products
1- Range: 0
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- github.com/advisories/GHSA-c37r-v8jx-7cv2ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2023-40703ghsaADVISORY
- mattermost.com/security-updatesghsaWEB
News mentions
0No linked articles in our index yet.