Runner command execution via unescaped environment export
Published Feb 19, 2026 · Updated Feb 19, 2026
Command injection in Aqua Security Trivy Action 0.31.0 through 0.33.1 allows attackers to execute runner commands via crafted inputs. The set_env_var_if_provided function writes input values into trivy_envs.txt without shell escaping, and entrypoint.sh later sources the file. Exploitation requires a consuming workflow to place attacker-controlled data in an exported input; commands run with the workflow job's permissions.
Summary
What happened
Command injection in Aqua Security Trivy Action 0.31.0 through 0.33.1 allows attackers to execute runner commands via crafted inputs. The set_env_var_if_provided function writes input values into trivy_envs.txt without shell escaping, and entrypoint.sh later sources the file. Exploitation requires a consuming workflow to place attacker-controlled data in an exported input; commands run with the workflow job's permissions.
The record
- CVE
- CVE-2026-26189
- Published
- Feb 19, 2026
- Updated
- Feb 19, 2026
- Vendor
- Aqua Security
- Product
- Trivy Action
- Classifications
- CWE-78, CAPEC-88, T1059.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 19, 2026CVE publishedPublication date reported by the CVE source.
- Feb 19, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=>= 0.31.0, < 0.34.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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