🛡️ CVE-2023-1774 — mattermost

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
• Privileges required: Low — an ordinary user account is enough.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
• Integrity impact: Low — limited, and the attacker does not choose what is affected.
• Availability impact: None.

Weakness class

CVE-2023-1774 is classified as CWE-862: Missing Authorization. No authorisation check is performed before carrying out a restricted action.

Affected software

CVE-2023-1774 is recorded against 5 packages.

• github.com/mattermost/mattermost-server
• github.com/mattermost/mattermost-server/v5
• github.com/mattermost/mattermost-server/v6
• mattermost
• mattermost-server

Timeline and source

Published on 31 March 2023 and last revised on 6 December 2023. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

nvd.nist.gov (Advisory)
mattermost.com (Web)
github.com (Package)

Other advisories for this package

github.com/mattermost/mattermost-server has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-4646 (published 7 Jul 2026)
• CVE-2026-3473 (8.0 High, published 7 Jul 2026)
• CVE-2026-5755 (published 7 Jul 2026)
• CVE-2026-4635 (published 7 Jul 2026)
• CVE-2026-28735 (published 7 Jul 2026)
• CVE-2026-5308 (8.0 High, published 7 Jul 2026)
• CVE-2026-20719 (published 25 Jun 2026)
• CVE-2026-3590 (published 25 Jun 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-862: Missing Authorization) in other software:

• CVE-2014-0167 (published 6 Jul 2026)
• CVE-2022-0932 (6.5 Medium, published 2 Jul 2026)
• CVE-2024-23752 (9.5 Critical, published 29 Jun 2026)
• CVE-2024-24709 (4.3 Medium, published 17 Jun 2026)
• CVE-2022-42479 (5.4 Medium, published 11 Jun 2026)
• CVE-2022-45813 (5.4 Medium, published 11 Jun 2026)
• CVE-2023-32959 (4.3 Medium, published 11 Jun 2026)
• CVE-2023-25969 (5.4 Medium, published 11 Jun 2026)

Details

Affected Packages

References