CVE-2018-21260
LOWCVSS 2.7/10EPSS 0.74%
Last modified
CVE-2018-21260 is a low-severity vulnerability rated 2.7/10 on the CVSS scale. An issue was discovered in Mattermost Server before 4.8.1, 4.7.4, and 4.6.3. WebSocket events were accidentally sent during certain user-management operations, violating user privacy.. EPSS estimates a 0.74% chance of exploitation in the next 30 days.
Description
An issue was discovered in Mattermost Server before 4.8.1, 4.7.4, and 4.6.3. WebSocket events were accidentally sent during certain user-management operations, violating user privacy.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost Server | >= 4.6.0, < 4.6.3 |
| Mattermost | Mattermost Server | >= 4.7.0, < 4.7.4 |
| Mattermost | Mattermost Server | >= 4.8.0, < 4.8.1 |
References
- https://mattermost.com/security-updates/Vendor Advisory
- https://mattermost.com/security-updates/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-21260?
An issue was discovered in Mattermost Server before 4.8.1, 4.7.4, and 4.6.3. WebSocket events were accidentally sent during certain user-management operations, violating user privacy.
How severe is CVE-2018-21260?
CVE-2018-21260 has a CVSS score of 2.7/10 (LOW severity). The EPSS model estimates a 0.74% probability of exploitation in the next 30 days.
How do I fix CVE-2018-21260?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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- CVE-2018-21264An issue was discovered in Mattermost Server before 4.7.0, 4…8.8
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- CVE-2018-21266Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
Are you affected by CVE-2018-21260?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST