{"id":"CVE-2026-101998","aliases":["EUVD-2026-95157","GHSA-cc8x-7cv4-34m9"],"status":"published","title":"Fail-open response masking in Docker Sandboxes can expose proxy-managed credentials","description":"Docker Sandboxes could fail open while masking credentials in protected proxy responses. When a response-body read returned data together with an error, affected handlers could forward unmasked bytes. Code inside an authorized sandbox could use this to recover host-managed OAuth access and refresh tokens or a derived Anthropic API key intended to remain outside the sandbox.","severity":{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00163,"percentile":0.05537,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-636"],"published":"2026-10-08T18:47:28Z","modified":"2026-10-08T21:33:24Z","products":[{"vendor":"docker","product":"docker sandboxes"}],"references":[{"url":"https://docs.docker.com/ai/sandboxes/","tags":["product"]},{"url":"https://docs.docker.com/ai/sandboxes/configuration/credentials/#how-credential-injection-works","tags":["technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101998"},{"url":"https://docs.docker.com/ai/sandboxes"},{"url":"https://github.com/advisories/GHSA-cc8x-7cv4-34m9"}],"sources":{"cve":[{"id":"CVE-2026-101998","title":"Fail-open response masking in Docker Sandboxes can expose proxy-managed credentials","description":"Docker Sandboxes could fail open while masking credentials in protected proxy responses. When a response-body read returned data together with an error, affected handlers could forward unmasked bytes. Code inside an authorized sandbox could use this to recover host-managed OAuth access and refresh tokens or a derived Anthropic API key intended to remain outside the sandbox.","status":"published","published":"2026-10-08T18:47:28.551Z","modified":"2026-10-08T19:27:49.633Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-636"],"updated_at":"2026-11-02T14:20:09.808851Z"}],"euvd":[{"id":"EUVD-2026-95157","description":"Docker Sandboxes could fail open while masking credentials in protected proxy responses. When a response-body read returned data together with an error, affected handlers could forward unmasked bytes. Code inside an authorized sandbox could use this to recover host-managed OAuth access and refresh tokens or a derived Anthropic API key intended to remain outside the sandbox.","status":"published","published":"2026-10-08T18:47:28Z","modified":"2026-10-08T19:27:49Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T17:27:27.72962Z"}],"ghsa":[{"id":"GHSA-cc8x-7cv4-34m9","title":"Docker Sandboxes could fail open while masking credentials in protected proxy responses. When a...","description":"Docker Sandboxes could fail open while masking credentials in protected proxy responses. When a response-body read returned data together with an error, affected handlers could forward unmasked bytes. Code inside an authorized sandbox could use this to recover host-managed OAuth access and refresh tokens or a derived Anthropic API key intended to remain outside the sandbox.","status":"published","published":"2026-10-08T21:33:22Z","modified":"2026-10-08T21:33:24Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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","level":"medium"}],"cwes":["CWE-636"],"updated_at":"2026-11-02T15:12:57.86261Z"}],"nvd":[{"id":"CVE-2026-101998","description":"Docker Sandboxes could fail open while masking credentials in protected proxy responses. When a response-body read returned data together with an error, affected handlers could forward unmasked bytes. Code inside an authorized sandbox could use this to recover host-managed OAuth access and refresh tokens or a derived Anthropic API key intended to remain outside the sandbox.","status":"published","published":"2026-10-08T19:16:56.4Z","modified":"2026-10-08T20:46:35.26Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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","level":"medium","assessor":"secondary"}],"cwes":["CWE-636"],"updated_at":"2026-11-02T14:12:55.142936Z"}]}}