{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-81098 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-81098 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-81098 is a critical missing authorization vulnerability in team-telnyx telnyx-mcp, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-81098 and fix it if it is affected.\n\nWhat it is: CVE-2026-81098 is a critical missing authorization vulnerability in team-telnyx telnyx-mcp, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-81098 in the wild and no public exploit code.\n\nAffected product: team-telnyx telnyx-mcp. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-81098/ (Markdown: https://insights.sbomify.com/CVE-2026-81098/index.md)","id":"CVE-2026-81098","markdown":"https://insights.sbomify.com/CVE-2026-81098/index.md","name":"CVE-2026-81098","record":{"aliases":["GHSA-46jp-xr2h-fw7h","GHSA-j929-p4w2-gfw7"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["privilege_escalation","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Telnyx MCP Server","requires_auth":"none","summary":"Unauthenticated attackers can access the Telnyx MCP server and execute tools using the server's stored API credentials due to missing authentication checks.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"The Telnyx MCP server exposed its HTTP transport on every interface and did not require a caller credential. packages/mcp-server/src/http.ts served MCP on the root path with a listener bound to all interfaces and parsed the caller's authentication headers in a mode that did not fail when they were absent, so a request without any credential completed initialisation and dispatched tools. Dispatch forwarded the server's own stored credentials, the Telnyx API key and client secret together with the code-execution key, to the upstream endpoint, so an unauthenticated caller able to reach the port acted with them. The current code defaults the host to loopback, requires a server API key, and enforces it in middleware.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Telnyx MCP Server through 6.83.0 Missing Authentication on Streamable HTTP Transport","id":"CVE-2026-81098","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Timescale tiger-slack DNS Rebinding via Disabled Host Header Allow-List","id":"CVE-2026-81099"},"packages":[],"prev":{"headline":"rails-mcp-server 1.4.0 through 1.6.0 OS Command Execution via execute_ruby PTY Escape","id":"CVE-2026-81097"},"products":["telnyx-mcp"],"published":"2026-08-27","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-29","vendors":["team-telnyx"]},"summary":"Unauthenticated attackers can access the Telnyx MCP server and execute tools using the server's stored API credentials due to missing authentication checks.","url":"https://insights.sbomify.com/CVE-2026-81098/"}