Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2017-18874

23
FAUCET Score

CVE-2017-18874 is a directory traversal vulnerability affecting Mattermost Server versions before 4.3.0, 4.2.1, and 4.1.2 when local storage is configured for files. A System Admin can exploit this flaw to traverse directories, potentially leading to high confidentiality and integrity impacts. With a CVSS score of 6.5 (Medium), this vulnerability requires high privileges for exploitation and has no known public exploits, Metasploit modules, or Nuclei templates. There is also no evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.1.2CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
>= 4.2.0, < 4.2.1CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
4.3.0CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc1:*:*:*:*:*:*
4.3.0CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc2:*:*:*:*:*:*
4.3.0CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.23%
Probability of exploitation in next 30 days
EPSS Percentile
65.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0123 is in the 73rd percentile among its peer group of 3,565 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

gopatch availablevia ghsa
Product: github.com/mattermost/mattermost-serverFixed in: 4.1.2-0.20171004201910-6be8113eb60
gopatch availablevia ghsa
Product: github.com/mattermost/mattermost-serverFixed in: 4.2.1-0.20171004194140-6d3cb2ce07fc
gopatch availablevia ghsa
Product: github.com/mattermost/mattermost-serverFixed in: 4.3.0

Vendor Advisories (1)

goGHSA-8qg8-c7mw-6fj7medium

Mattermost Server is vulnerable to Directory Traversal by System Admins

May 24, 2022

References

mattermost.com / security-updates
Vendor Advisory