CVE-2017-18884
published 2020-06-19CVE-2017-18884: An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to gain privileges by using a registered OAuth application…
PriorityP341high8.1CVSS 3.1
AVNACLPRLUINSUCHIHAN
EPSS
0.81%
53.0th percentile
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to gain privileges by using a registered OAuth application with personal access tokens.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | mattermost_mattermost-server | >= 0 < 4.1.2 | 4.1.2 |
| github.com | mattermost_mattermost-server | >= 0 < 4.1.2+incompatible | 4.1.2+incompatible |
| github.com | mattermost_mattermost-server | >= 4.2.0-rc1 < 4.2.1 | 4.2.1 |
| github.com | mattermost_mattermost-server | >= 4.2.0-rc1+incompatible < 4.2.1+incompatible | 4.2.1+incompatible |
| github.com | mattermost_mattermost-server | >= 4.3.0-rc1 < 4.3.0 | 4.3.0 |
| github.com | mattermost_mattermost-server | >= 4.3.0-rc1+incompatible < 4.3.0+incompatible | 4.3.0+incompatible |
| mattermost | mattermost_server | < 4.1.2 | 4.1.2 |
| mattermost | mattermost_server | — | — |
| mattermost | mattermost_server | >= 4.2.0 < 4.2.1 | 4.2.1 |
CVSS provenance
nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
nvdv2.05.5MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:N
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OSV
Mattermost Server exposes OAuth personal access tokens to attackers in github.com/mattermost/mattermost-server
osv·2025-12-08
CVE-2017-18884 Mattermost Server exposes OAuth personal access tokens to attackers in github.com/mattermost/mattermost-server
Mattermost Server exposes OAuth personal access tokens to attackers in github.com/mattermost/mattermost-server
Mattermost Server exposes OAuth personal access tokens to attackers in github.com/mattermost/mattermost-server
OSV
Mattermost Server exposes OAuth personal access tokens to attackers
osv·2022-05-24
CVE-2017-18884 [CRITICAL] Mattermost Server exposes OAuth personal access tokens to attackers
Mattermost Server exposes OAuth personal access tokens to attackers
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to gain privileges by using a registered OAuth application with personal access tokens.
GHSA
Mattermost Server exposes OAuth personal access tokens to attackers
ghsa·2022-05-24
CVE-2017-18884 [CRITICAL] CWE-269 Mattermost Server exposes OAuth personal access tokens to attackers
Mattermost Server exposes OAuth personal access tokens to attackers
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to gain privileges by using a registered OAuth application with personal access tokens.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2020-06-19
Published