CVE-2026-47752
CriticalCVSS 9.9Exploitation Probability (EPSS)
Low risk43th percentile - higher than 43% of all known CVEs
Summary
Tugtainer before version 1.30.2 is vulnerable to Server-Side Template Injection (SSTI) in the notification template feature. The `title_template` and `body_template` fields are rendered using an unsandboxed `jinja2.Environment`, allowing any authenticated user to execute arbitrary OS commands as root inside the container.
Risk Assessment
An attacker can fully compromise the Docker container, leading to a breach of confidentiality, integrity, and availability of data and potentially the entire system.
Recommendation
Immediately update Tugtainer to version 1.30.2 or later.
Other vulnerabilities in Tugtainer
See all- CVE-2026-62308Critical
In Tugtainer prior to version 1.30.6, an authenticated user can make the backend server send outbound HTTP requests to arbitrary user-supplied URLs through the notification test endpoint. The /settings/test_notification endpoint accepts a urls field and passes it directly to Apprise without restricting protocols, hostnames, localhost, private IP ranges, or cloud metadata addresses. This can be abused as an authenticated blind SSRF.
- CVE-2026-55181Critical
In Tugtainer prior to version 1.30.3, OIDC authentication can still be initiated even when OIDC_ENABLED=false. The /auth/oidc/enabled endpoint correctly reports that OIDC is disabled, but a direct request to /auth/oidc/login still starts the OIDC login flow, returns HTTP 302, sets an oidc_state cookie, and redirects to the OIDC authorization endpoint. This bypasses the intended OIDC disable switch.
- CVE-2026-87004High
Tugtainer prior to version 1.31.3 has a vulnerability where the OIDC login flow decodes the id_token without verifying signature, audience, issuer, and expiry. Extracted claims are used directly as the user_id for the session.
Original NVD description (English source)
Tugtainer is a self-hosted app for automating updates of Docker containers. Versions prior to 1.30.2 are vulnerable to Server-Side Template Injection (SSTI) in the notification template feature. The `title_template` and `body_template` fields are rendered using an unsandboxed `jinja2.Environment`, allowing any authenticated user to execute arbitrary OS commands as root inside the container. Version 1.30.2 fixes the issue.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS