CVE-2023-1562

CVE-2023-1562 is a low-severity vulnerability in Mattermost with a CVSS 3.x base score of 3.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-668.

Key facts

Description

Mattermost fails to check the "Show Full Name" setting when rendering the result for the /plugins/focalboard/api/v2/users API call, allowing an attacker to learn the full name of a board owner.

Frequently asked questions

What is CVE-2023-1562?
Mattermost fails to check the "Show Full Name" setting when rendering the result for the /plugins/focalboard/api/v2/users API call, allowing an attacker to learn the full name of a board owner.
How severe is CVE-2023-1562?
CVE-2023-1562 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2023-1562 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-1562?
CVE-2023-1562 affects Mattermost. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-1562?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-1562 published?
CVE-2023-1562 was published on 2023-03-22 and last updated on 2026-06-17.

References

Affected products (1)

More vulnerabilities in Mattermost

All CVEs affecting Mattermost →

Other CWE-668 (Exposure of Resource to Wrong Sphere) vulnerabilities

Browse all CWE-668 (Exposure of Resource to Wrong Sphere) vulnerabilities →