Vulnerability Bulletins

CVE-2026-28735

   
Affected software GITHUB
 
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to validate the OAuth token scope on the callback which allows an authenticated Mattermost user to gain access to private repositories via modifying the scope parameter in the GitHub authorization URL.. Mattermost Advisory ID: MMSA-2026-00628

Link:

https://nvd.nist.gov/vuln/detail/CVE-2026-28735