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  5. CVE-2017-18903

CVE-2017-18903: Mattermost Server vulnerable to CSRF if CORS is enabled

May 24, 2022 (updated January 12, 2026)

An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2. CSRF can occur if CORS is enabled.

References

  • github.com/advisories/GHSA-fcwg-45jh-5qhf
  • github.com/mattermost/mattermost
  • github.com/mattermost/mattermost/commit/312269ad0bd166174f07f9df7391fce714601600
  • github.com/mattermost/mattermost/commit/4519b03d95e8bfe1b2f74094673ae1a2f39f6b47
  • github.com/mattermost/mattermost/commit/a18479df0940be8503c9b88993490741793eba9e
  • mattermost.com/security-updates
  • nvd.nist.gov/vuln/detail/CVE-2017-18903

Code Behaviors & Features

Detect and mitigate CVE-2017-18903 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions before 3.9.2, all versions starting from 3.10.0-rc1 before 3.10.2

Fixed versions

  • 3.9.2
  • 3.10.2

Solution

Upgrade to versions 3.10.2, 3.9.2 or above.

Impact 8.8 HIGH

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

Learn more about CVSS

Weakness

  • CWE-352: Cross-Site Request Forgery (CSRF)

Source file

go/github.com/mattermost/mattermost-server/CVE-2017-18903.yml

Spotted a mistake? Edit the file on GitLab.

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