CVE-2026-55576
GitHub Actions workflow executes shell from PR title in MaaAssistantArknights (RCE on runner).
Is CVE-2026-55576 being exploited?
Not confirmed. CVE-2026-55576 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.46% probability of exploitation in the next 30 days.
How severe is CVE-2026-55576?
CVE-2026-55576 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-55576?
Yes. A fix has been recorded for CVE-2026-55576. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-55576 affect?
CVE-2026-55576 affects MaaAssistantArknights (dev-v2) GitHub Actions workflow, ubuntu-latest GitHub Actions runner, generate-changelog job. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-55576?
Apply commit cafc3946059e... to sanitize PR title input; disable untrusted input execution.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary shell commands can run on ubuntu-latest GitHub Actions runner via crafted forked PR title during generate-changelog job.
Immediate action required