Vulnerability · Published Oct 17, 2026 · Assigned by VulnCheck

CVE-2026-111932Coder before 2.34.2 Stored HTML Injection via Appearance Settings

Low 3.4

In plain English

A low-severity cross-site scripting in coder from coder. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.4Low

Exploit odds (30 days)0.2%top 94.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/coder/coder	no fix listed	GO-2026-6267
Go	github.com/coder/coder/v2	2.34.2	GHSA-h58c-xccx-75m3
Go	github.com/coder/coder/v2	2.33.8	GHSA-h58c-xccx-75m3
Go	github.com/coder/coder/v2	2.32.7	GHSA-h58c-xccx-75m3
Go	github.com/coder/coder/v2	2.29.17	GHSA-h58c-xccx-75m3
Go	github.com/coder/coder/v2	2.29.17, 2.32.7, 2.33.8, 2.34.2	GO-2026-6267

Affected products (as reported)

Vendor	Product	Versions
coder	coder	2.34.0 – before 2.34.2
coder	coder	2.33.0 – before 2.33.8
coder	coder	2.30.0 – before 2.32.7
coder	coder	0 – before 2.29.17

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:L/A:N

References

GitHub Security Advisory (GHSA-h58c-xccx-75m3) vendor-advisory
VulnCheck Advisory: Coder before 2.34.2 Stored HTML Injection via Appearance Settings third-party-advisory