{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-59563 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-59563 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-59563 is a medium-severity vulnerability in zscaler-mcp-server, published on 28 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-59563 and fix it if it is affected.\n\nWhat it is: CVE-2026-59563 is a medium-severity vulnerability in zscaler-mcp-server, published on 28 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-59563 in the wild and no public exploit code.\n\nAffected product: zscaler-mcp-server. 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-2026-59563/ (Markdown: https://insights.sbomify.com/CVE-2026-59563/index.md)","id":"CVE-2026-59563","markdown":"https://insights.sbomify.com/CVE-2026-59563/index.md","name":"CVE-2026-59563","record":{"aliases":["GHSA-6wjq-5f4c-p8f7"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Zscaler MCP Server","requires_auth":"low_privilege","summary":"Attackers can replay HMAC tokens across resources, allowing unauthorized modification of data in Zscaler MCP Server.","user_interaction":"required","vuln_class":"business_logic"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Zscaler","cpe":[],"cvss":{"score":4.6,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-305","name":"Authentication Bypass by Primary Weakness"}],"description":"Zscaler MCP Server versions 0.7.0 and 0.7.1 has an issue where HMAC confirmation tokens were not bound to the target resource identifier, allowing an MCP client or agent to replay a token generated for one resource to affect another resource of the same type. This issue is fixed in version 0.7.2.","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":"HMAC Confirmation Token Unbinding in zscaler-mcp-server","id":"CVE-2026-59563","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"business_logic","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Authentication bypass between ZCC and client connector portal","id":"CVE-2026-59564"},"packages":[],"prev":{"headline":"Apache IoTDB: Remote code execution and Unauthenticated path traversal in legacy pipe sendFile RPC","id":"CVE-2026-59562"},"products":["zscaler-mcp-server"],"published":"2026-09-28","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-28","vendors":["Zscaler"]},"summary":"Attackers can replay HMAC tokens across resources, allowing unauthorized modification of data in Zscaler MCP Server.","url":"https://insights.sbomify.com/CVE-2026-59563/"}