147 lines
6.3 KiB
JSON
147 lines
6.3 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-2026-77250",
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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": "2026-08-20T19:02:23.416Z",
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"datePublished": "2026-09-22T17:51:02.674Z",
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"dateUpdated": "2026-09-22T18:42:59.068Z"
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},
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"containers": {
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"cna": {
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"title": "MCP Atlassian: OAuth fallback token storage writes plaintext access and refresh tokens with group-readable permissions",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-312",
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"lang": "en",
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"description": "CWE-312: Cleartext Storage of Sensitive Information",
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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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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "LOCAL",
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"availabilityImpact": "NONE",
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"baseScore": 6.1,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "LOW",
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
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"version": "3.1"
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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/sooperset/mcp-atlassian/security/advisories/GHSA-g5xv-mhgm-v5f6",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-g5xv-mhgm-v5f6"
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},
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{
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"name": "https://github.com/sooperset/mcp-atlassian/pull/1448",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/sooperset/mcp-atlassian/pull/1448"
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},
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{
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"name": "https://github.com/sooperset/mcp-atlassian/commit/b041733473f95119dd539542a43c280737a8e460",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/sooperset/mcp-atlassian/commit/b041733473f95119dd539542a43c280737a8e460"
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},
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{
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"name": "https://github.com/sooperset/mcp-atlassian/releases/tag/v0.22.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/sooperset/mcp-atlassian/releases/tag/v0.22.0"
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}
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],
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"affected": [
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{
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"vendor": "sooperset",
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"product": "mcp-atlassian",
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"versions": [
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{
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"version": "< 0.22.0",
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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": "2026-09-22T17:51:02.674Z"
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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 Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, OAuthConfig writes a plaintext fallback file containing access and refresh tokens under the user's .mcp-atlassian directory using process-default permissions. On systems with a permissive umask, same-group or other local users and processes can read the persisted tokens and reuse the associated Atlassian access. The advisory traces the vulnerable input and processing flow through OAuthConfig._save_tokens, ~/.mcp-atlassian/oauth-<client_id>.json, access_token, and refresh_token, which identify the affected entry points, controls, and code paths. This issue is fixed in version 0.22.0."
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}
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],
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"source": {
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"advisory": "GHSA-g5xv-mhgm-v5f6",
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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/sooperset/mcp-atlassian/security/advisories/GHSA-g5xv-mhgm-v5f6",
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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": "2026-09-22T18:42:32.636268Z",
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"id": "CVE-2026-77250",
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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": "partial"
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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": "2026-09-22T18:42:59.068Z"
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}
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}
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]
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}
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} |