CVE-2026-77339
- Source
- https://cve.org/CVERecord?id=CVE-2026-77339
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77339.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-77339
- Aliases
- Published
- 2026-09-18T16:37:19Z
- Modified
- 2026-10-28T02:30:36Z
- Severity
-
- 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:H/SA:N CVSS Calculator
- Summary
- Process Compose: Browser DNS rebinding lets websites control local process-compose MCP tools
- Details
-
Process Compose is a scheduler and orchestrator for non-containerized applications. Prior to 1.120.0, the MCP SSE listener in src/mcp/server.go accepts browser-origin requests to /sse and the returned message endpoint without validating the Host header, validating the Origin header, or authenticating the caller. When MCP SSE is enabled, a malicious website can use DNS rebinding to reach the loopback listener and issue MCP requests. If expose_control_tools is enabled, the attacker can enumerate process state, read or search logs, truncate logs, and start, stop, restart, or scale local processes; configured user-defined tools can expose additional commands and output. The Gin REST API token middleware does not protect this separately started MCP listener. This issue is fixed in version 1.120.0.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-306", "CWE-346" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77339.json" }- References
-
- https://github.com/F1bonacc1/process-compose/releases/tag/v1.120.0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77339.json
- https://github.com/F1bonacc1/process-compose/security/advisories/GHSA-5gm3-9crp-6g3v
- https://nvd.nist.gov/vuln/detail/CVE-2026-77339
- https://github.com/F1bonacc1/process-compose/commit/6ffa74f462cd2fa4f8dc1ee63c70b793b298c858
Affected packages
Git / github.com/f1bonacc1/process-compose
Affected ranges
- Type
- GIT
- Repo
- https://github.com/f1bonacc1/process-compose
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "1.120.0" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "6ffa74f462cd2fa4f8dc1ee63c70b793b298c858" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v1.120.0", "range": [ { "fixed": "0f3a8e6868f592f044a2ecd9387ff3025825ad46" } ], "source": "REFERENCES_TAG" } ] }