CVE-2026-47752 | Tugtainer is a self-hosted app for automating updates of Doc… | CVSS 9.9 CRITICAL

Description

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.

Metadata

CVE ID: CVE-2026-47752
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-05-19 22:16 UTC
Published: 2026-07-23 16:57 UTC
Last updated: 2026-07-23 17:43 UTC
Primary CWE: CWE-1336
CWE-1336: Improper Neutralization of Special Elements Used i…
Vendor / Product: Quenary / tugtainer
Sources: cve.org · NVD

Severity & Metrics

9.9 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Quenary	tugtainer	—	< 1.30.2

Weakness (CWE)

CWE	Source	Description
CWE-1336	cna	CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.9	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References (1)

https://github.com/Quenary/tugtainer/security/advisories/GHSA-g2cj-2x47-78vq https://github.com/Quenary/tugtainer/security/advisories/GHSA-g2cj-2x47-78vq