CVE-2017-18879
MEDIUMCVSS 6.1/10EPSS 0.69%
Last modified
CVE-2017-18879 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS could occur via the author_link field of a Slack attachment.. EPSS estimates a 0.69% chance of exploitation in the next 30 days.
Description
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS could occur via the author_link field of a Slack attachment.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Mattermost | Mattermost Server | < 4.1.2 | — |
| Mattermost | Mattermost Server | >= 4.2.0, < 4.2.1 | — |
| Mattermost | Mattermost Server | 4.3.0 | Rc1 |
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-2017-18879?
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS could occur via the author_link field of a Slack attachment.
How severe is CVE-2017-18879?
CVE-2017-18879 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.
How do I fix CVE-2017-18879?
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.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- 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 2017
- CVE-2017-18873An issue was discovered in Mattermost Server before 4.3.0, 4…5.3
- CVE-2017-18874An issue was discovered in Mattermost Server before 4.3.0, 4…6.5
- CVE-2017-18875An issue was discovered in Mattermost Server before 4.3.0, 4…4.9
- CVE-2017-18876An issue was discovered in Mattermost Server before 4.3.0, 4…4.9
- CVE-2017-18877An issue was discovered in Mattermost Server before 4.3.0, 4…6.1
- CVE-2017-18878An issue was discovered in Mattermost Server before 4.3.0, 4…4.3
- CVE-2017-1888Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultI…
- CVE-2017-18880An issue was discovered in Mattermost Server before 4.3.0, 4…6.1
- CVE-2017-18881An issue was discovered in Mattermost Server before 4.3.0, 4…6.1
- CVE-2017-18882An issue was discovered in Mattermost Server before 4.3.0, 4…6.1
- CVE-2017-18883An issue was discovered in Mattermost Server before 4.3.0, 4…9.1
- CVE-2017-18884An issue was discovered in Mattermost Server before 4.3.0, 4…8.1
Are you affected by CVE-2017-18879?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST