Is github.com/mattermost/mattermost-plugin-msteams affected by CVE-2026-24661?

Go github.com/mattermost/mattermost-plugin-msteams is affected in <1.15.1-0.20260213190728-6fe4d295592e.

Is CVE-2026-24661 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.3%.

medium

CVE-2026-24661

Q: Is CVE-2026-24661 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.3%.

Go · github.com/mattermost/mattermost-plugin-msteams

Summary

Mattermost MS Teams plugin doesn't limit the request body size on the /changes webhook endpoint

Severity: medium
EPSS: 0.3% (p23)
Also known as: GHSA-5rfv-h47g-xj42
Published: 2026-04-09

References

https://nvd.nist.gov/vuln/detail/CVE-2026-24661
https://github.com/mattermost/mattermost-plugin-msteams/commit/6fe4d295592ecc8767d67e69286cbeec01be3210
https://github.com/mattermost/mattermost-plugin-msteams

Related advisories

CVE-2026-2476 — medium · Go/github.com/mattermost/mattermost-plugin-msteams

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.