6.5

CVE-2023-2788: mattermost Missing Authorization

CVSS: 6.5v3.1MediumModified
Published 16-06-2023Last modified 06-12-2024
Open JSON

Vulnerability summary

CVE-2023-2788 is a medium (CVSS 6.5) Missing Authorization vulnerability in mattermost. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 41.8% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.50%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 16-06-2023
    PublishedVulnerability first disclosed.
  2. 06-12-2024
    Last modifiedVulnerability information updated.

Description

Mattermost fails to check if an admin user account active after an oauth2 flow is started, allowing an attacker with admin privileges to retain persistent access to Mattermost by obtaining an oauth2 access token while the attacker's account is deactivated.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

0.00 pp

From 0.50% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.50%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Mattermost1 product
  • mattermost≤ 7.1.9 | ≤ 7.8.4 | ≤ 7.9.3 | ≥ 7.1.0, ≤ 7.1.9 | ≥ 7.8.0, ≤ 7.8.4 | ≥ 7.9.0, ≤ 7.9.3 | 7.10.0

1 vendor · 1 product

References

1 links