150 lines
6.5 KiB
JSON
150 lines
6.5 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-55580",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-06-16T23:18:03.169Z",
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"datePublished": "2026-08-25T15:42:36.474Z",
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"dateUpdated": "2026-08-25T16:08:10.442Z"
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},
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"containers": {
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"cna": {
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"title": "mcp-shell — Security Disabled by Default in Bare-Binary Deploy Path + Shell Interpreter in Secure-Mode Allowlist",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-78",
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"lang": "en",
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"description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"attackVector": "LOCAL",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "HIGH",
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"vulnIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "HIGH",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 8.6,
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
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"version": "4.0"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/sonirico/mcp-shell/security/advisories/GHSA-f5pj-2738-996m",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/sonirico/mcp-shell/security/advisories/GHSA-f5pj-2738-996m"
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},
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{
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"name": "https://github.com/sonirico/mcp-shell/pull/16",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/sonirico/mcp-shell/pull/16"
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},
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{
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"name": "https://github.com/sonirico/mcp-shell/commit/f31377fce6ec31114e5a4398c0e5270552bce09f",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/sonirico/mcp-shell/commit/f31377fce6ec31114e5a4398c0e5270552bce09f"
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},
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{
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"name": "https://github.com/sonirico/mcp-shell/releases/tag/v0.6.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/sonirico/mcp-shell/releases/tag/v0.6.0"
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}
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],
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"affected": [
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{
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"vendor": "sonirico",
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"product": "mcp-shell",
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"versions": [
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{
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"version": "< 0.6.0",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-08-25T15:42:36.474Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "mcp-shell is an MCP server for running shell commands securely, auditably, and on demand. Prior to 0.6.0, config.go initializes Security.Enabled to false, and when MCP_SHELL_SEC_CONFIG_FILE is unset, main.go starts the documented bare-binary deployment without a security policy. SecurityValidator.validateCommand in security.go then short-circuits and allows every command supplied to the shell_exec MCP tool, so an LLM connected over stdio can execute unrestricted OS commands as the mcp-shell process user. The README from-source installation and MCP client configuration omit MCP_SHELL_SEC_CONFIG_FILE, making the insecure state the documented default. This issue is fixed in version 0.6.0."
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}
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],
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"source": {
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"advisory": "GHSA-f5pj-2738-996m",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/sonirico/mcp-shell/security/advisories/GHSA-f5pj-2738-996m",
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"tags": [
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"exploit"
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]
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}
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],
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-08-25T16:07:52.580459Z",
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"id": "CVE-2026-55580",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-08-25T16:08:10.442Z"
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}
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}
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]
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}
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} |