CVE-2026-31861
OS command injection via /api/user/git-config in Cloud CLI prior to 1.24.0.
Is CVE-2026-31861 being exploited?
Not confirmed. CVE-2026-31861 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 6.0% probability of exploitation in the next 30 days.
How severe is CVE-2026-31861?
CVE-2026-31861 is rated High with a CVSS score of 8.7. 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-2026-31861?
Yes. A fix has been recorded for CVE-2026-31861. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-31861 affect?
CVE-2026-31861 affects Cloud CLI / Claude Code UI (desktop and mobile), Cursor CLI, Codex, Gemini-CLI. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-31861?
Upgrade to 1.24.0+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated RCE: arbitrary OS commands on host via git-config input.
Patch when possible
- affected< 1.24.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.