What’s Vulnerable › Vulnerabilities

CVE-2026-55576: MaaAssistantArknights: PR-title expression injection in release-preparation.yml

• Severity: high (CVSS 8.8 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-15 · updated 2026-08-12
• Weakness: CWE-78

Description

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.

Affected products

• MaaAssistantArknights: before cafc3946059e6337d2089d4fec8b6885ba17c332

References

• https://github.com/MaaAssistantArknights/MaaAssistantArknights/commit/cafc3946059e6337d2089d4fec8b6885ba17c332
• https://github.com/MaaAssistantArknights/MaaAssistantArknights/security/advisories/GHSA-pqx2-5g66-f5w8

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