CVE-2026-55576

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

State: Published
Severity: 8.8 High
Published: Jul 15, 2026
Updated: Aug 12, 2026
Reserved: Jun 16, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.8 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
MaaAssistantArknightsMaaAssistantArknights	< cafc3946059e6337d2089d4fec8b6885ba17c332Affected

References

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