CVE-2018-21261
MEDIUMCVSS 4.3/10EPSS 0.58%
Last modified
CVE-2018-21261 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. An issue was discovered in Mattermost Server before 4.8.1, 4.7.4, and 4.6.3. An e-mail invite accidentally included the team invite_id, which leads to unintended excessive invitation privileges.. EPSS estimates a 0.58% 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. An e-mail invite accidentally included the team invite_id, which leads to unintended excessive invitation privileges.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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-2018-21261?
An issue was discovered in Mattermost Server before 4.8.1, 4.7.4, and 4.6.3. An e-mail invite accidentally included the team invite_id, which leads to unintended excessive invitation privileges.
How severe is CVE-2018-21261?
CVE-2018-21261 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.
How do I fix CVE-2018-21261?
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.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2018
- CVE-2018-21256An issue was discovered in Mattermost Server before 5.1. It …4.3
- CVE-2018-21257An issue was discovered in Mattermost Server before 5.1. It …5.3
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- CVE-2018-21259An issue was discovered in Mattermost Server before 4.10.1, …5.3
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- CVE-2018-21263An issue was discovered in Mattermost Server before 4.7.0, 4…8.8
- CVE-2018-21264An issue was discovered in Mattermost Server before 4.7.0, 4…8.8
- CVE-2018-21265An issue was discovered in Mattermost Desktop App before 4.0…5.3
- CVE-2018-21266Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2018-21267Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
Are you affected by CVE-2018-21261?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST