TI-2026-20828 Aliases CVE-2026-25761 GHSA-r79c-pqj3-577x

Command injection via crafted filenames in Super-linter Action

MEDIUM 43CWE-77Published 2026-02-09 · Updated 2026-02-10

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-77.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01477 74th percentileScored 2026-11-07

Fix Fixed super-linter (super-linter): 8.3.1super-linter/super-linter (GitHub Actions): 8.3.1+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
super-linter	super-linter	6.0.0 to before 8.3.1	8.3.1	Patch available	CNA
—	super-linter/super-linter (GitHub Actions)	6.0.0 to before 8.3.1	8.3.1	Patch available	GHSA-r79c-pqj3-577x
—	super-linter/super-linter/slim (GitHub Actions)	6.0.0 to before 8.3.1	8.3.1	Patch available	GHSA-r79c-pqj3-577x

super-linter Vendorsuper-linter Affected 6.0.0 to before 8.3.1 Fixed in 8.3.1 Patch available CNA
super-linter/super-linter (GitHub Actions) Vendor— Affected 6.0.0 to before 8.3.1 Fixed in 8.3.1 Patch available GHSA-r79c-pqj3-577x
super-linter/super-linter/slim (GitHub Actions) Vendor— Affected 6.0.0 to before 8.3.1 Fixed in 8.3.1 Patch available GHSA-r79c-pqj3-577x

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:super-linter_project:super-linter::::::::	6.0.0 to before 8.3.1	Vulnerable	Super-linter Project

cpe:2.3:a:super-linter_project:super-linter:*:*:*:*:*:*:*:* Versions 6.0.0 to before 8.3.1 Vulnerable ·Super-linter Project

Remediation

Fix · CNA super-linter (super-linter) Fixed in 8.3.1
Fix · GHSA-r79c-pqj3-577x super-linter/super-linter (GitHub Actions) Fixed in 8.3.1 Advisory →
Fix · GHSA-r79c-pqj3-577x super-linter/super-linter/slim (GitHub Actions) Fixed in 8.3.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-25761
2026-10-03 Alias added: GHSA-r79c-pqj3-577x

References

Advisory 2

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences