CVE-2026-55576

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

HIGH
8.8
CVSS Score
Published: July 15, 2026 at 09:02 PM UTC
Updated: August 12, 2026 at 07:17 PM UTC
1 product affected across 1 vendorMaaAssistantArknights

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Severity
HIGH8.8
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < cafc3946059e6337d2089d4fec8b6885ba17c332

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-78CWE-94

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