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Low, CVSS 3.4amended

Coder: Stored HTML injection via unescaped ApplicationName and LogoURL appearance settings

CVE-2026-111932GHSA-h58c-xccx-75m3

What to do

Partial vendor fix. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • Go github.com/coder/coder

    Affected
    every version
    Fixed in
    no fixed version recorded

  • Go github.com/coder/coder/v2

    Affected
    >= 2.34.0, < 2.34.2>= 2.33.0, < 2.33.8>= 2.30.0, < 2.32.7< 2.29.17
    Fixed in
    2.33.8, 2.29.17, 2.34.2, 2.32.7

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
3.4 · CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:L/A:N
EPSS
  • CVE-2026-111932: 0.17% estimated exploitation activity in the next 30 days; percentile 5.97 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

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 Owner role 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…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-h58c-xccx-75m3

  2. Revision 2 · amended ·

    Amended from osv record GO-2026-6267

  3. Revision 1 · created ·

    Published from osv record GHSA-h58c-xccx-75m3

Agent brief

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# Patch Next advisory brief: CVE-2026-111932

Advisory: Coder: Stored HTML injection via unescaped ApplicationName and LogoURL appearance settings
IDs: CVE-2026-111932, GHSA-h58c-xccx-75m3
Record: https://patchnext.com/advisories/cve-2026-111932 (revision 3, source checked 26 Oct 2026, 15:28 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 3.4)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: github.com/coder/coder/v2 2.34.2, 2.33.8, 2.32.7, 2.29.17. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/coder/coder: affected every version
- Go github.com/coder/coder/v2: affected >= 2.34.0, < 2.34.2; >= 2.33.0, < 2.33.8; >= 2.30.0, < 2.32.7; < 2.29.17; fixed in 2.33.8, 2.29.17, 2.34.2, 2.32.7

## Suggested inspection (read-only)
- Go github.com/coder/coder: check the installed version with your package manager.
- Go github.com/coder/coder/v2: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/coder/coder, github.com/coder/coder/v2.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-h58c-xccx-75m3 (OSV record GHSA-h58c-xccx-75m3 lists affected ranges: Go github.com/coder/coder/v2 >=2.34.0 =2.33.0 =2.30.0 =0 <2.29.17 (fixed))
- Verified: https://osv.dev/vulnerability/GO-2026-6267 (OSV record GO-2026-6267 lists affected ranges: Go github.com/coder/coder >=0; Go github.com/coder/coder/v2 >=0 =2.30.0 =2.33.0 =2.34.0 <2.34.2 (fixed))
- Verified: https://github.com/advisories/GHSA-h58c-xccx-75m3 (GitHub-reviewed advisory GHSA-h58c-xccx-75m3 lists affected ranges: Go github.com/coder/coder/v2 >=2.34.0 =2.33.0 =2.30.0 =0 <2.29.17)

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