CVE-2025-27936 — Webhook Secret Exposure via Timing attack in MSteams plugin

CVE-2025-27936

Webhook Secret Exposure via Timing attack in MSteams plugin PUBLISHED

Description (CNA)

Mattermost Plugin MSTeams versions <2.1.0 and Mattermost Server versions 10.5.x <=10.5.1 with the MS Teams plugin enabled fail to perform constant time comparison on a MSTeams plugin webhook secret which allows an attacker to retrieve the webhook secret of the MSTeams plugin via a timing attack during webhook secret comparison.

Affected (CNA)

Vendor / product	Versions
Mattermost / Mattermost	affected 10.5.0 through 10.5.1; unaffected 10.6.0; unaffected 10.5.2

CWE

CWE-208

References

https://mattermost.com/security-updates

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.