CVE-2026-111932
Coder before 2.34.2 Stored HTML Injection via Appearance Settings
Coder before 2.29.17, 2.30.0 before 2.32.7, 2.33.0 before 2.33.8, and 2.34.0 before 2.34.2 contains a stored HTML injection vulnerability because the ApplicationName and LogoURL appearance settings are rendered into HTML output without sufficient escaping. Attackers with the Owner role can store HTML markup in these settings that renders in the Coder dashboard and in SMTP notification emails sent to other deployment users.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- Passive
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Coder before 2.34.2 Stored HTML Injection via Appearance Settings
Coder before 2.29.17, 2.30.0 before 2.32.7, 2.33.0 before 2.33.8, and 2.34.0 before 2.34.2 contains a stored HTML injection vulnerability because the ApplicationName and LogoURL appearance settings are rendered into HTML output without sufficient escaping. Attackers with the Owner role can store HTML markup in these settings that renders in the Coder dashboard and in SMTP notification emails sent to other deployment users.
- Record
CVE-2026-111932- CVSS 4.0
- 4.8 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N - CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2026-103299
Coder before 2.29.17, 2.30.0 before 2.32.7, 2.33.0 before 2.33.8, and 2.34.0 before 2.34.2 contains a stored HTML injection vulnerability because the ApplicationName and LogoURL appearance settings are rendered into HTML output without sufficient escaping. Attackers with the Owner role can store HTML markup in these settings that renders in the Coder dashboard and in SMTP notification emails sent to other deployment users.
- Record
EUVD-2026-103299- CVSS 4.0
- 4.8 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-7cmx-x3cj-5mp3
Coder before 2.29.17, 2.30.0 before 2.32.7, 2.33.0 before 2.33.8, and 2.34.0 before 2.34.2...
Coder before 2.29.17, 2.30.0 before 2.32.7, 2.33.0 before 2.33.8, and 2.34.0 before 2.34.2 contains a stored HTML injection vulnerability because the ApplicationName and LogoURL appearance settings are rendered into HTML output without sufficient escaping. Attackers with the Owner role can store HTML markup in these settings that renders in the Coder dashboard and in SMTP notification emails sent to other deployment users.
- Record
GHSA-7cmx-x3cj-5mp3- CVSS 4.0
- 4.8 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-h58c-xccx-75m3
Coder: Stored HTML injection via unescaped ApplicationName and LogoURL appearance settings
Summary
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
Ownerrole which already holds full administrative control of the deployment so practical impact is limited.
Impact
An Owner-role user could store HTML markup in the ApplicationName or LogoURL appearance settings that later rendered in the dashboard and in SMTP notification emails which results in stored HTML injection against other users of the deployment. Exploitation requires the highly privileged Owner role.
Patches
The fix escapes the ApplicationName and LogoURL appearance values in HTML output before rendering.
The fix was backported to all supported release lines:
| Release line | Patched version | |---|---| | 2.34 | v2.34.2 | | 2.33 | v2.33.8 | | 2.32 | v2.32.7 | | 2.29 (ESR) | v2.29.17 |
Workarounds
Restrict the Owner role to trusted administrators.
References
- Fix: #25804
Credits
We'd like to thank Anthropic's Security Team (ANT-2026-22453) for independently disclosing this issue!
- Record
GHSA-h58c-xccx-75m3- CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:L/A:N - Weakness
- CWE-74
- Updated
- 2026-11-02
NVD
Coder before 2.29.17, 2.30.0 before 2.32.7, 2.33.0 before 2.33.8, and 2.34.0 before 2.34.2 contains a stored HTML injection vulnerability because the ApplicationName and LogoURL appearance settings are rendered into HTML output without sufficient escaping. Attackers with the Owner role can store HTML markup in these settings that renders in the Coder dashboard and in SMTP notification emails sent to other deployment users.
- Record
CVE-2026-111932- CVSS 4.0
- 4.8 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-05
OSV
Coder before 2.34.2 Stored HTML Injection via Appearance Settings
Coder before 2.29.17, 2.30.0 before 2.32.7, 2.33.0 before 2.33.8, and 2.34.0 before 2.34.2 contains a stored HTML injection vulnerability because the ApplicationName and LogoURL appearance settings are rendered into HTML output without sufficient escaping. Attackers with the Owner role can store HTML markup in these settings that renders in the Coder dashboard and in SMTP notification emails sent to other deployment users.
- Record
CVE-2026-111932- CVSS 4.0
- 4.8 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N - Weakness
- CWE-79
- Updated
- 2026-11-05
OSVGHSA-h58c-xccx-75m3
Coder: Stored HTML injection via unescaped ApplicationName and LogoURL appearance settings
Summary
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
Ownerrole which already holds full administrative control of the deployment so practical impact is limited.
Impact
An Owner-role user could store HTML markup in the ApplicationName or LogoURL appearance settings that later rendered in the dashboard and in SMTP notification emails which results in stored HTML injection against other users of the deployment. Exploitation requires the highly privileged Owner role.
Patches
The fix escapes the ApplicationName and LogoURL appearance values in HTML output before rendering.
The fix was backported to all supported release lines:
| Release line | Patched version | |---|---| | 2.34 | v2.34.2 | | 2.33 | v2.33.8 | | 2.32 | v2.32.7 | | 2.29 (ESR) | v2.29.17 |
Workarounds
Restrict the Owner role to trusted administrators.
References
- Fix: #25804
Credits
We'd like to thank Anthropic's Security Team (ANT-2026-22453) for independently disclosing this issue!
- Record
GHSA-h58c-xccx-75m3- CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:L/A:N - Weakness
- CWE-74
- Updated
- 2026-11-02
OSVGO-2026-6267 No score
Coder: Stored HTML injection via unescaped ApplicationName and LogoURL appearance settings in github.com/coder/coder
Coder: Stored HTML injection via unescaped ApplicationName and LogoURL appearance settings in github.com/coder/coder
- Record
GO-2026-6267- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/coder/coder/v2Go |
2.34.0 up to 2.34.2 | 2.34.2 |
github.com/coder/coder/v2Go |
2.33.0 up to 2.33.8 | 2.33.8 |
github.com/coder/coder/v2Go |
2.30.0 up to 2.32.7 | 2.32.7 |
github.com/coder/coder/v2Go |
before 2.29.17 | 2.29.17 |
github.com/coder/coderGo |
All versions | None known |
github.com/coder/coder/v2Go |
before 2.29.17, 2.30.0 up to 2.32.7, 2.33.0 up to 2.33.8, 2.34.0 up to 2.34.2 | 2.29.172.32.72.33.82.34.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | NVD | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-111932 is a medium vulnerability (CVSS 4.8) in Coder, published August 20, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 5th percentile. Fixed in github.com/coder/coder/v2 2.34.2.
References
github.com/coder/coder/security/advisories/GHSA-h58c-xccx-75m3
vulncheck.com/advisories/coder-before-2.34.2-stored-html-injection-via-appearance-settings
nvd.nist.gov/vuln/detail/CVE-2026-111932
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