CVE-2026-27208
Published: 24 February 2026
Summary
CVE-2026-27208 is a critical-severity OS Command Injection (CWE-78) vulnerability in Bleon-Ethical Api-Gateway-Deploy. Its CVSS base score is 9.2 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Unix Shell (T1059.004); ranked at the 46.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 AC-6 (Least Privilege) and CM-6 (Configuration Settings).
Deeper analysis
CVE-2026-27208 affects version 1.0.0 of bleon-ethical/api-gateway-deploy, an API gateway deployment tool. The vulnerability is an attack chain combining OS command injection (CWE-78, CWE-88) with privilege escalation (CWE-250, CWE-269), stemming from improper input handling and execution of commands as root within the container. It carries a CVSS v3.1 base score of 9.2 (AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H), highlighting its critical severity due to high impact on confidentiality, availability, and scope change.
A local attacker with no privileges required can exploit this vulnerability with low complexity and no user interaction. Successful exploitation enables execution of arbitrary commands with root privileges inside the container, potentially leading to container escape and unauthorized modifications to the underlying infrastructure.
The vulnerability is addressed in version 1.0.1 through strict input sanitization, secure delimiters in entrypoint.sh, enforcement of a non-root user (appuser) in the Dockerfile, and mandatory security quality gates. Details are available in the GitHub security advisory (GHSA-chh5-w73q-4gmm) and release notes at the Security tag.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-8464
Vulnerability details
bleon-ethical/api-gateway-deploy provides API gateway deployment. Version 1.0.0 is vulnerable to an attack chain involving OS Command Injection and Privilege Escalation. This allows an attacker to execute arbitrary commands with root privileges within the container, potentially leading to a container escape…
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and unauthorized infrastructure modifications. This is fixed in version 1.0.1 by implementing strict input sanitization and secure delimiters in entrypoint.sh, enforcing a non-root user (appuser) in the Dockerfile, and establishing mandatory security quality gates.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
CVE enables OS command injection for Unix Shell execution (T1059.004) and privilege escalation to root privileges inside the container (T1068).
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Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly addresses OS command injection by requiring strict validation and sanitization of inputs to prevent arbitrary command execution.
Mitigates privilege escalation by enforcing least privilege, such as running container processes as a non-root user like appuser instead of root.
Ensures secure configuration settings in the Dockerfile and entrypoint.sh, including secure delimiters and mandatory security quality gates.