RCE in Super-Linter
CVE-2026-25761
Super-linter is a combination of multiple linters to run as a GitHub Action or standalone. From 6.0.0 to 8.3.0, the Super-linter GitHub Action is vulnerable to command injection via crafted filenames. When this action is used in downstream GitHub Actions workflows, an attacker can submit a pull request that introduces a file whose name contains shell command substitution syntax, such as $(...). In affected Super-linter versions, runtime scripts may execute the embedded command during file discovery processing, enabling arbitrary command execution in the workflow runner context. This can be used to disclose the job’s GITHUB_TOKEN depending on how the workflow configures permissions. This vulnerability is fixed in 8.3.1.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.013 (68.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Super-linter — versions >= 6.0.0, < 8.3.1
- Super-linter_project Super-linter
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-25761?
- CVE-2026-25761 is a high-severity vulnerability in Super-Linter, classified under Command Injection. CVSS score: 8.8/10. Published 2026-02-09.
- How severe is CVE-2026-25761?
- High severity. CVSS v3 base score is 8.8 out of 10.