CVE-2025-55073 — MS Teams plugin OAuth allows editing arbitrary posts

CVE-2025-55073

MS Teams plugin OAuth allows editing arbitrary posts PUBLISHED

Description (CNA)

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to validate the relationship between the post being updated and the MSTeams plugin OAuth flow which allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL.

Affected (CNA)

Vendor / product	Versions
Mattermost / Mattermost	affected 10.11.0 through 10.11.3; affected 10.5.0 through 10.5.11; affected 10.12.0 through 10.12.0; unaffected 11.0.0; unaffected 10.11.4; unaffected 10.5.12; unaffected 10.12.1

CWE

CWE-306

References

https://mattermost.com/security-updates

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.