CVE Catalog

CVE-2026-55576

HighCVSS 8.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.30%

22th percentile - higher than 22% of all known CVEs

Summary

A vulnerability in MaaAssistantArknights allows an attacker to execute arbitrary shell commands on a GitHub Actions runner by injecting code into the pull request title. The issue occurs in the dev-v2 workflow where the PR title is directly used in a shell command during pull_request opened, reopened, and ready_for_review events.

Risk Assessment

An attacker can take over the CI/CD runner, leading to theft of secrets, repository modification, or further attacks on the organization's infrastructure.

Recommendation

Immediately update MaaAssistantArknights to a version containing commit cafc3946059e6337d2089d4fec8b6885ba17c332 and avoid directly using user input in shell commands.

Related vulnerabilities

Original NVD description (English source)

MaaAssistantArknights is a one-click tool for daily Arknights tasks. In the current dev-v2 workflow, .github/workflows/release-preparation.yml inlined attacker-controlled github.event.pull_request.title into a run: shell command during the pull_request opened, reopened, and ready_for_review events, so a non-draft fork PR whose title starts with Release v could execute shell commands on the ubuntu-latest runner during the generate-changelog job. This vulnerability is fixed by commit cafc3946059e6337d2089d4fec8b6885ba17c332.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS