CVE-2026-21388
2 advisories.
Go/github.com/mattermost/mattermost-plugin-msteams CVE-2026-21388: low 3.7
Mattermost MS Teams plugin doesn't limit the request body size on the /lifecycle webhook endpoint
Action: Upgrade github.com/mattermost/mattermost-plugin-msteams to 1.15.1-0.20260213190728-6fe4d295592e or later.
go get github.com/mattermost/mattermost-plugin-msteams@v1.15.1-0.20260213190728-6fe4d295592eAffected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.15.1-0.20260213190728-6fe4d295592e | - |
Fixed versions
| 1.15.1-0.20260213190728-6fe4d295592e |
Sources
- osv: GHSA-x274-8qfc-hrgf
- https://nvd.nist.gov/vuln/detail/CVE-2026-21388
- https://github.com/mattermost/mattermost-plugin-msteams/commit/6fe4d295592ecc8767d67e69286cbeec01be3210
- https://github.com/mattermost/mattermost-plugin-msteams
- https://github.com/mattermost/mattermost-plugin-msteams/releases/tag/v2.3.2
- https://mattermost.com/security-updates
CVE-2026-21388 · published · modified · JSON
Go/github.com/mattermost/mattermost-plugin-msteams CVE-2026-21388: unknown
Mattermost MS Teams plugin doesn't limit the request body size on the /lifecycle webhook endpoint in github.com/mattermost/mattermost-plugin-msteams
Action: Upgrade github.com/mattermost/mattermost-plugin-msteams to 1.15.1-0.20260213190728-6fe4d295592e or later.
go get github.com/mattermost/mattermost-plugin-msteams@v1.15.1-0.20260213190728-6fe4d295592eAffected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.15.1-0.20260213190728-6fe4d295592e | - |
Fixed versions
| 1.15.1-0.20260213190728-6fe4d295592e |
Sources
- osv: GO-2026-5734
- https://github.com/advisories/GHSA-x274-8qfc-hrgf
- https://nvd.nist.gov/vuln/detail/CVE-2026-21388
- https://github.com/mattermost/mattermost-plugin-msteams/commit/6fe4d295592ecc8767d67e69286cbeec01be3210
- https://github.com/mattermost/mattermost-plugin-msteams/releases/tag/v2.3.2
- https://mattermost.com/security-updates
CVE-2026-21388 · published · modified · JSON