{"id":"CVE-2026-116045","kind":"vulnerability","aliases":["CVE-2026-116045"],"related":[],"title":"designer-mcp: path traversal in get_reference lets remote callers read files","description":"A vulnerability was detected in 1999AZZAR designer-mcp up to 2.1.0. This affects the function get_reference of the file skills/motion-designer/references/motion-dev-guidelines.md of the component MCP Interface. The manipulation of the argument Name results in path traversal. It is possible to launch the attack remotely. The exploit is now public and may be used. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The patch is identified as c8c2951dcbed9b1710a745993f028317f10a3f10. Applying a patch is advised to resolve this issue.","summary":"The designer-mcp MCP server's get_reference function does not sanitize its Name argument, so a crafted name escapes the references directory via path traversal. A remote caller can read files the server process can access, and a public exploit is reported.","severity":"medium","cvss":4.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["ai-tooling","designer-mcp","mcp"],"not_affected_if":["local-only-stdio"],"how_to_check":"- Check the installed designer-mcp version against `2.1.0`; the sources say versions are rolling and unlisted, so compare against the patch commit `c8c2951dcbed9b1710a745993f028317f10a3f10`\n- Look for the `get_reference` handler in the MCP Interface and confirm whether the Name argument is validated before it is joined to a file path","fix":"- Apply the patch commit `c8c2951dcbed9b1710a745993f028317f10a3f10` from the designer-mcp repository\n- Until patched, unknown whether a workaround exists; restrict network access to the MCP endpoint","status":"open","published_at":"2026-10-25T07:16:46+00:00","first_seen_at":"2026-10-25T07:39:10+00:00","triaged_at":"2026-10-25T07:39:17+00:00","updated_at":"2026-10-25T07:39:17+00:00","category":"ai-tooling","confidence":0.6,"triage":{"at":"2026-10-25T07:39:17Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the patch commit `c8c2951dcbed9b1710a745993f028317f10a3f10` from the designer-mcp repository\n- Until patched, unknown whether a workaround exists; restrict network access to the MCP endpoint","reach":"internet","title":"designer-mcp: path traversal in get_reference lets remote callers read files","impact":"medium","summary":"The designer-mcp MCP server's get_reference function does not sanitize its Name argument, so a crafted name escapes the references directory via path traversal. A remote caller can read files the server process can access, and a public exploit is reported.","category":"ai-tooling","nicknames":[],"who_cares":["mcp","designer-mcp","ai-tooling"],"confidence":0.6,"needs_auth":"unknown","worst_case":"Attacker reads arbitrary files readable by the server process","analyst_note":"Confirm the authentication requirement and the exposed transport for the MCP interface, and check the NVD page or the repository for affected version ranges.","how_to_check":"- Check the installed designer-mcp version against `2.1.0`; the sources say versions are rolling and unlisted, so compare against the patch commit `c8c2951dcbed9b1710a745993f028317f10a3f10`\n- Look for the `get_reference` handler in the MCP Interface and confirm whether the Name argument is validated before it is joined to a file path","needs_analyst":true,"not_affected_if":["local-only-stdio"],"who_is_affected":"Teams that run designer-mcp as an MCP server reachable over the network, since the vulnerable get_reference handler accepts remote requests. The sources do not say which deployment modes expose the MCP interface. Local-only use over stdio with no remote caller is likely lower exposure, but the sources do not confirm that.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000668,"input_tokens":3425,"output_tokens":651,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-116045':16A,19A '-2026':15A,18A '1999azzar':76C '2.1.0':82C 'access':64B 'advis':158C 'affect':84C,141C 'ai':21B 'ai-tool':20B 'appli':154C 'approach':129C 'argument':42B,102C 'attack':114C 'avail':147C 'c8c2951dcbed9b1710a745993f028317f10a3f10':153C 'caller':11A,56B 'compon':95C 'contini':135C 'craft':45B 'cve':14A,17A 'deliveri':136C 'design':2A,24B,29B,78C 'designer-mcp':1A,23B,28B,77C 'detail':139C 'detect':74C 'directori':50B 'escap':47B 'exploit':68B,117C 'file':13A,59B,91C 'function':36B,86C 'get':7A,34B,87C 'identifi':151C 'interfac':97C 'issu':162C 'launch':112C 'let':9A 'manipul':99C 'may':122C 'mcp':3A,25B,26B,30B,31B,79C,96C 'name':41B,46B,103C 'patch':149C,156C 'path':4A,52B,106C 'possibl':110C 'process':62B 'product':126C 'provid':134C 'public':67B,120C 'read':12A,58B 'refer':8A,35B,49B,88C 'releas':132C,144C 'remot':10A,55B,115C 'report':70B 'resolv':160C 'result':104C 'roll':131C 'sanit':39B 'server':32B,61B 'skills/motion-designer/references/motion-dev-guidelines.md':92C 'take':127C 'therefor':137C 'tool':22B 'travers':5A,53B,107C 'updat':143C 'use':124C 'version':138C 'via':51B 'vulner':72C","nicknames":[],"mitigations":[],"who_affected":"Teams that run designer-mcp as an MCP server reachable over the network, since the vulnerable get_reference handler accepts remote requests. The sources do not say which deployment modes expose the MCP interface. Local-only use over stdio with no remote caller is likely lower exposure, but the sources do not confirm that.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-25T07:16:46+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"cna@vuldb.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-116045","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116045","severity":null,"published_at":"2026-10-25T07:16:46+00:00","modified_at":"2026-10-25T07:16:46+00:00","first_seen_at":"2026-10-25T07:39:10+00:00","fetched_at":"2026-10-25T07:39:10+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}