CVE-2025-64641
published 2025-12-24CVE-2025-64641: Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fail to verify that post actions invoking /share-issue-publicly…
PriorityP420medium4.1CVSS 3.1
AVNACLPRLUIRSCCLINAN
EPSS
0.15%
4.6th percentile
Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fail to verify that post actions invoking /share-issue-publicly were created by the Jira plugin which allowed a malicious Mattermost user to exfiltrate Jira tickets when victim users interacted with affected posts
Affected
17 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | mattermost_mattermost-server | >= 10.11.0 < 10.11.8 | 10.11.8 |
| github.com | mattermost_mattermost-server | >= 10.11.0+incompatible < 10.11.8+incompatible | 10.11.8+incompatible |
| github.com | mattermost_mattermost-server | >= 10.12.0 < 10.12.4 | 10.12.4 |
| github.com | mattermost_mattermost-server | >= 10.12.0+incompatible < 10.12.4+incompatible | 10.12.4+incompatible |
| github.com | mattermost_mattermost-server | >= 11.0.0 < 11.0.6 | 11.0.6 |
| github.com | mattermost_mattermost-server | >= 11.0.1+incompatible < 11.0.6+incompatible | 11.0.6+incompatible |
| github.com | mattermost_mattermost-server | >= 11.1.0 < 11.1.1 | 11.1.1 |
| github.com | mattermost_mattermost-server | >= 11.1.0+incompatible < 11.1.1+incompatible | 11.1.1+incompatible |
| github.com | mattermost_mattermost_server_v8 | >= 0 < 8.0.0-20251121122154-b57c297c6d7 | 8.0.0-20251121122154-b57c297c6d7 |
| mattermost | mattermost | 10.11.0 – 10.11.7 | — |
| mattermost | mattermost | 10.12.0 – 10.12.3 | — |
| mattermost | mattermost | 11.0.0 – 11.0.5 | — |
| mattermost | mattermost | 11.1.0 – 11.1.0 | — |
| mattermost | mattermost_server | >= 10.11.0 < 10.11.8 | 10.11.8 |
| mattermost | mattermost_server | >= 10.12.0 < 10.12.4 | 10.12.4 |
| mattermost | mattermost_server | >= 11.0.0 < 11.0.6 | 11.0.6 |
| mattermost | mattermost_server | >= 11.1.0 < 11.1.1 | 11.1.1 |
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OSV
Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created by the Jira plugin in github.com/mattermost/mattermost-server
osv·2026-02-26
CVE-2025-64641 Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created by the Jira plugin in github.com/mattermost/mattermost-server
Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created by the Jira plugin in github.com/mattermost/mattermost-server
Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created by the Jira plugin in github.com/mattermost/mattermost-server.
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/server/v8 before v8.0.0-20251121122154-b57c297c6d7.
GHSA
Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created by the Jira plugin
ghsa·2025-12-24
CVE-2025-64641 [MEDIUM] CWE-863 Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created by the Jira plugin
Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created by the Jira plugin
Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fail to verify that post actions invoking /share-issue-publicly were created by the Jira plugin which allowed a malicious Mattermost user to exfiltrate Jira tickets when victim users interacted with affected posts
OSV
Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created by the Jira plugin
osv·2025-12-24
CVE-2025-64641 [MEDIUM] Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created by the Jira plugin
Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created by the Jira plugin
Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fail to verify that post actions invoking /share-issue-publicly were created by the Jira plugin which allowed a malicious Mattermost user to exfiltrate Jira tickets when victim users interacted with affected posts
No detection rules found.
No public exploits indexed.
2025-12-24
Published