Vulnerability · Published Jun 16, 2023 · Assigned by Mattermost

CVE-2023-2783App Framework does not checks for the secret provided in the incoming webhook request

Medium 4.3

In plain English

A medium-severity missing authorization in Mattermost App Framework from Mattermost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.4%top 61.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Mattermost Apps Framework fails to verify that a secret provided in the incoming webhook request allowing an attacker to modify the contents of the post sent by the Apps.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Gogithub.com/mattermost/mattermost-server/v67.10.1GHSA-455c-vqrf-mghr
Gogithub.com/mattermost/mattermost-server/v67.9.4GHSA-455c-vqrf-mghr
Gogithub.com/mattermost/mattermost-server/v67.8.5GHSA-455c-vqrf-mghr
Gogithub.com/mattermost/mattermost-server/v66.0.0-20230511130429-1629a6ca7fedGHSA-455c-vqrf-mghr

Affected products (as reported)

VendorProductVersions
Mattermost Mattermost App Framework 0 – through 7.8.40 – through 7.9.37.10.0

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References