VYPR
Moderate severityNVD Advisory· Published Jul 8, 2026· Updated Jul 8, 2026

Coder vulnerable to stored HTML injection via workspace agent logs in AgentLogLine component

CVE-2026-55437

Description

Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.17, 2.32.7, 2.33.8, and 2.34.2, the AgentLogLine dashboard component instantiated ansi-to-html without escapeXML: true and inserted the result via dangerouslySetInnerHTML so HTML embedded in workspace agent log lines was rendered as live markup. Server-side sanitization did not neutralize HTML metacharacters. Exploitation requires a victim to view attacker-controlled agent logs in the dashboard. The fix in versions 2.29.17, 2.32.7, 2.33.8, and 2.34.2 enables escapeXML: true so HTML metacharacters are escaped before DOM insertion. No known workarounds are available.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
github.com/coder/coder/v2Go
>= 2.34.0, < 2.34.22.34.2
github.com/coder/coder/v2Go
>= 2.33.0, < 2.33.82.33.8
github.com/coder/coder/v2Go
>= 2.30.0, < 2.32.72.32.7
github.com/coder/coder/v2Go
< 2.29.172.29.17

Affected products

1
  • Coder/Coderllm-fuzzy
    Range: <2.29.17, <2.32.7, <2.33.8, <2.34.2

Patches

Vulnerability mechanics

References

7

News mentions

0

No linked articles in our index yet.