How severe is CVE-2026-31861?

CVE-2026-31861 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-31861 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-31861?

CVE-2026-31861 affects Cloudcli Cloud Cli. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-31861?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-31861 have an EU (EUVD) identifier?

Yes. CVE-2026-31861 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11263.

When was CVE-2026-31861 published?

CVE-2026-31861 was published on 2026-03-11 and last updated on 2026-06-17.

CVE-2026-31861

CVE-2026-31861 is a high-severity vulnerability in Cloudcli Cloud Cli with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11263
Weakness: CWE-94
Affected product: Cloudcli Cloud Cli
Published: 2026-03-11
Last modified: 2026-06-17

Description

Cloud CLI (aka Claude Code UI) is a desktop and mobile UI for Claude Code, Cursor CLI, Codex, and Gemini-CLI. Prior to 1.24.0, The /api/user/git-config endpoint constructs shell commands by interpolating user-supplied gitName and gitEmail values into command strings passed to child_process.exec(). The input is placed within double quotes and only " is escaped, but backticks (`), $() command substitution, and \ sequences are all interpreted within double-quoted strings in bash. This allows authenticated attackers to execute arbitrary OS commands via the git configuration endpoint. This vulnerability is fixed in 1.24.0.

Frequently asked questions

What is CVE-2026-31861?: Cloud CLI (aka Claude Code UI) is a desktop and mobile UI for Claude Code, Cursor CLI, Codex, and Gemini-CLI. Prior to 1.24.0, The /api/user/git-config endpoint constructs shell commands by interpolating user-supplied gitName and gitEmail values into command strings passed to child_process.exec(). The input is placed within double quotes and only " is escaped, but backticks (`), $() command substitution, and \ sequences are all interpreted within double-quoted strings in bash. This allows authenticated attackers to execute arbitrary OS commands via the git configuration endpoint. This vulnerability is fixed in 1.24.0.
How severe is CVE-2026-31861?: CVE-2026-31861 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-31861 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-31861?: CVE-2026-31861 affects Cloudcli Cloud Cli. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-31861?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-31861 have an EU (EUVD) identifier?: Yes. CVE-2026-31861 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11263.
When was CVE-2026-31861 published?: CVE-2026-31861 was published on 2026-03-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cloudcli:cloud_cli:*:*:*:*:*:*:*:*

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