152 lines
6.8 KiB
JSON
152 lines
6.8 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-2026-47751",
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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": "2026-05-19T22:16:39.505Z",
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"datePublished": "2026-07-16T15:59:29.885Z",
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"dateUpdated": "2026-07-18T02:55:59.645Z"
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},
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"containers": {
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"cna": {
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"title": "Claude Code Action: Malicious MCP Server Configuration in PRs Enables Remote Code Execution and Secret Exfiltration",
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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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"descriptions": [
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{
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"cweId": "CWE-200",
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"lang": "en",
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"description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
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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": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "LOW",
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"vulnIntegrityImpact": "LOW",
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"vulnAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "HIGH",
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"subIntegrityImpact": "HIGH",
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"subAvailabilityImpact": "NONE",
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"baseScore": 5.3,
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/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/anthropics/claude-code-action/security/advisories/GHSA-8q5r-mmjf-575q",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/anthropics/claude-code-action/security/advisories/GHSA-8q5r-mmjf-575q"
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},
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{
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"name": "https://github.com/anthropics/claude-code-action/pull/1066",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/anthropics/claude-code-action/pull/1066"
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},
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{
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"name": "https://github.com/anthropics/claude-code-action/commit/9ddce40de8c1ab71fb6303a125fdad0968dc1312",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/anthropics/claude-code-action/commit/9ddce40de8c1ab71fb6303a125fdad0968dc1312"
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},
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{
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"name": "https://github.com/anthropics/claude-code-action/releases/tag/v1.0.74",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/anthropics/claude-code-action/releases/tag/v1.0.74"
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}
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],
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"affected": [
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{
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"vendor": "anthropics",
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"product": "claude-code-action",
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"versions": [
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{
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"version": "< 1.0.74",
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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": "2026-07-16T15:59:29.885Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Claude Code Action is a general-purpose GitHub action that runs Claude Code on GitHub pull requests and issues. Prior to 1.0.74, because the action checked out attacker-controlled pull request head branches, read .mcp.json from the working directory via default setting sources, and unconditionally enabled all project MCP servers via enableAllProjectMcpServers, an attacker who opened a pull request containing a malicious .mcp.json file could achieve arbitrary code execution on the GitHub Actions runner and exfiltrate secrets available to the workflow (such as API keys and tokens) when a privileged user or an automatic trigger invoked the Claude action on the pull request. This issue is fixed in version 1.0.74, which restores .claude/ and .mcp.json from the pull request base branch before the CLI runs."
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}
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],
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"source": {
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"advisory": "GHSA-8q5r-mmjf-575q",
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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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"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": "2026-07-18T02:55:45.984671Z",
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"id": "CVE-2026-47751",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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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": "2026-07-18T02:55:59.645Z"
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}
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}
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]
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}
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} |