CVE-2025-27936
published 2025-04-16CVE-2025-27936: Mattermost Plugin MSTeams versions <2.1.0 and Mattermost Server versions 10.5.x <=10.5.1 with the MS Teams plugin enabled fail to perform constant time…
PriorityP432medium5.9CVSS 3.1
AVNACHPRNUINSUCHINAN
EPSS
0.32%
24.0th percentile
Mattermost Plugin MSTeams versions <2.1.0 and Mattermost Server versions 10.5.x <=10.5.1 with the MS Teams plugin enabled fail to perform constant time comparison on a MSTeams plugin webhook secret which allows an attacker to retrieve the webhook secret of the MSTeams plugin via a timing attack during webhook secret comparison.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | mattermost_mattermost-plugin-msteams | >= 0 < 2.1.0 | 2.1.0 |
| github.com | mattermost_mattermost-server | >= 10.5.0+incompatible < 10.5.2+incompatible | 10.5.2+incompatible |
| github.com | mattermost_mattermost_server_v8 | >= 0 < 8.0.0-20250218121836-2b5275d87136 | 8.0.0-20250218121836-2b5275d87136 |
| github.com | mattermost_mattermost_server_v8 | >= 0 < 8.0.0-20250314142426-c049748b8863 | 8.0.0-20250314142426-c049748b8863 |
| github.com | mattermost_mattermost_server_v8 | >= 10.5.0 < 10.5.2 | 10.5.2 |
| mattermost | mattermost | 10.5.0 – 10.5.1 | — |
| mattermost | mattermost_server | < 10.5.2 | 10.5.2 |
| mattermost | ms_teams | < 2.1.0 | 2.1.0 |
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OSV
Mattermost vulnerable to Observable Timing Discrepancy in github.com/mattermost/mattermost-plugin-msteams
osv·2025-04-22
CVE-2025-27936 Mattermost vulnerable to Observable Timing Discrepancy in github.com/mattermost/mattermost-plugin-msteams
Mattermost vulnerable to Observable Timing Discrepancy in github.com/mattermost/mattermost-plugin-msteams
Mattermost vulnerable to Observable Timing Discrepancy in github.com/mattermost/mattermost-plugin-msteams.
NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.
(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)
The additional affected modules and versions are: github.com/mattermost/mattermost-plugin-msteams before v2.1.0.
GHSA
Mattermost vulnerable to Observable Timing Discrepancy
ghsa·2025-04-16
CVE-2025-27936 [MEDIUM] CWE-208 Mattermost vulnerable to Observable Timing Discrepancy
Mattermost vulnerable to Observable Timing Discrepancy
Mattermost Plugin MSTeams versions <2.1.0 and Mattermost Server versions 10.5.x <=10.5.1 with the MS Teams plugin enabled fail to perform constant time comparison on a MSTeams plugin webhook secret which allows an attacker to retrieve the webhook secret of the MSTeams plugin via a timing attack during webhook secret comparison.
OSV
Mattermost vulnerable to Observable Timing Discrepancy
osv·2025-04-16
CVE-2025-27936 [MEDIUM] Mattermost vulnerable to Observable Timing Discrepancy
Mattermost vulnerable to Observable Timing Discrepancy
Mattermost Plugin MSTeams versions <2.1.0 and Mattermost Server versions 10.5.x <=10.5.1 with the MS Teams plugin enabled fail to perform constant time comparison on a MSTeams plugin webhook secret which allows an attacker to retrieve the webhook secret of the MSTeams plugin via a timing attack during webhook secret comparison.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-04-16
Published