High severity · published Oct 27, 2026
CVE-2026-117560
ATXP Gemini CLI Extension through 1.0.0 OS Command Injection via MCP Tools
New
7.8
CVSS
–
EPSS
No
On KEV
Description
ATXP Gemini CLI extension through 1.0.0 contains an OS command injection vulnerability in runAtxp() that allows attackers to execute shell commands through unsanitized MCP tool parameters. Attackers can plant instructions in email or SMS content to inject $() or backtick substitutions into parameters like message_id, subject, or query, running commands as the user.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GE
gemini-cli-extension · atxp
through 1.0.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-117560
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-117560
github.com
https://github.com/atxp-dev/atxp
github.com
https://github.com/atxp-dev/atxp/blob/4e88b0282b51ae7c22ea1b6ca4476a39298299ff/src/server.ts#L28-L40
github.com
https://github.com/atxp-dev/atxp/issues/15
www.vulncheck.com
https://www.vulncheck.com/advisories/atxp-gemini-cli-extension-through-1.0.0-os-command-injection-via-mcp-tools