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  5. GHSA-h58c-xccx-75m3

GHSA-h58c-xccx-75m3: Coder: Stored HTML injection via unescaped ApplicationName and LogoURL appearance settings

August 20, 2026

The ApplicationName and LogoURL appearance settings were rendered into HTML output without sufficient escaping which let a highly privileged Owner-role user inject HTML into the Coder dashboard and SMTP notification emails.

Note: Exploitation requires the Owner role which already holds full administrative control of the deployment so practical impact is limited.

References

  • github.com/advisories/GHSA-h58c-xccx-75m3
  • github.com/coder/coder/commit/ec19bc41d80568c0eb9f74b526e8cc8ffbe3be9a
  • github.com/coder/coder/pull/25804
  • github.com/coder/coder/releases/tag/v2.29.17
  • github.com/coder/coder/releases/tag/v2.32.7
  • github.com/coder/coder/releases/tag/v2.33.8
  • github.com/coder/coder/releases/tag/v2.34.2
  • github.com/coder/coder/security/advisories/GHSA-h58c-xccx-75m3

Code Behaviors & Features

Detect and mitigate GHSA-h58c-xccx-75m3 with GitLab Dependency Scanning

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Affected versions

All versions before 2.29.17, all versions starting from 2.30.0 before 2.32.7, all versions starting from 2.33.0 before 2.33.8, all versions starting from 2.34.0 before 2.34.2

Fixed versions

  • 2.29.17
  • 2.32.7
  • 2.33.8
  • 2.34.2

Solution

Upgrade to versions 2.29.17, 2.32.7, 2.33.8, 2.34.2 or above.

Impact 3.4 LOW

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

Learn more about CVSS

Weakness

  • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Source file

go/github.com/coder/coder/v2/GHSA-h58c-xccx-75m3.yml

Spotted a mistake? Edit the file on GitLab.

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