CVE-2026-28735

MediumCVSS 5.4/10Last modified Jul 23, 2026

Description

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

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-863

Affected software

No affected versions have been published.

Timeline

Published: May 22, 2026
Last modified: Jul 23, 2026
NVD status: Analyzed

Related CVEs from 2026

CVE-2026-287364.3** UNSUPPORTED WHEN ASSIGNED ** Focalboard version 8.0 fails to validate file ownership when serving uploaded files. This allows an authenti CVE-2026-287378.7Gitea versions from 1.25.0 before 1.26.0 allow stored cross-site scripting through the extensionsRequired field in glTF files rendered by th CVE-2026-28748.8A flaw has been found in Tenda A21 1.0.0.0. Impacted is the function form_fast_setting_wifi_set of the file /goform/fast_setting_wifi_set. E CVE-2026-287407.1Gitea versions up to and including 1.26.2 allow Git LFS object reuse to authorize private source objects for users who have repository acces CVE-2026-287418.1Mattermost versions 10.11.x <= 10.11.12, 11.5.x <= 11.5.0, 11.4.x <= 11.4.2, 11.3.x <= 11.3.2 fail to validate CSRF tokens on an authenticat CVE-2026-287429.8Naxclow devices use a uniform request-signing scheme based on a hard-coded, platform-wide salt embedded in every firmware image. Once this s CVE-2026-287448.1Gitea versions up to and including 1.26.1 allow Git smart HTTP requests authenticated with bearer tokens to bypass repository token scope ch CVE-2026-287457.5Usernames and passwords, including the default credentials, are stored in the configuration file using weak encryption. If the default crede CVE-2026-287477.1A weak key generation vulnerability exists in specific firmware versions of Milesight AIOT cameras allows authorization to be bypassed.CVE-2026-287513.3in OpenHarmony v6.0 and prior versions allow a local attacker cause DOS.CVE-2026-287533.7NGINX Plus and NGINX Open Source have a vulnerability in the ngx_mail_smtp_module module due to the improper handling of CRLF sequences in D CVE-2026-287544.8Zohocorp ManageEngine Exchange Reporter Plus versions before 5802 are vulnerable to Stored XSS in Distribution Lists report.