{"id":"CVE-2026-92811","state":"PUBLISHED","title":"browserless 1.44.0 through 2.56.7 File Protocol Restriction Bypass","description":"browserless versions 1.44.0 through 2.56.7 fail to enforce file protocol restrictions in Playwright websocket endpoints, allowing authenticated token holders to read arbitrary files. Attackers can navigate Playwright-driven browsers to file scheme URLs and access files accessible to the container process despite the ALLOW_FILE_PROTOCOL setting defaulting to false.","publishedAt":"2026-09-16T20:32:57.539Z","updatedAt":"2026-09-21T15:40:14.058Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["browserless browserless"],"affected":[{"vendor":"browserless","product":"browserless","defaultStatus":"unaffected","versions":[{"version":"1.44.0","status":"affected","lessThanOrEqual":"2.56.7","versionType":"semver"}]}],"references":["https://github.com/geo-chen/oss/blob/main/browserless.md","https://github.com/browserless/browserless/blob/v2.50.1/src/browsers/browsers.cdp.ts#L105-L135","https://github.com/browserless/browserless/blob/v2.50.1/src/browsers/browsers.playwright.ts","https://github.com/browserless/browserless","https://www.vulncheck.com/advisories/browserless-1.44.0-through-2.56.7-file-protocol-restriction-bypass"],"weaknesses":["CWE-200"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/92xxx/CVE-2026-92811.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92811","state":"PUBLISHED","datePublished":"2026-09-16T20:32:57.539Z","dateUpdated":"2026-09-21T15:40:14.058Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-16T19:55:01.357Z"},"containers":{"cna":{"title":"browserless 1.44.0 through 2.56.7 File Protocol Restriction Bypass","descriptions":[{"lang":"en","value":"browserless versions 1.44.0 through 2.56.7 fail to enforce file protocol restrictions in Playwright websocket endpoints, allowing authenticated token holders to read arbitrary files. Attackers can navigate Playwright-driven browsers to file scheme URLs and access files accessible to the container process despite the ALLOW_FILE_PROTOCOL setting defaulting to false."}],"affected":[{"vendor":"browserless","product":"browserless","defaultStatus":"unaffected","versions":[{"version":"1.44.0","status":"affected","lessThanOrEqual":"2.56.7","versionType":"semver"}]}],"references":[{"url":"https://github.com/geo-chen/oss/blob/main/browserless.md","tags":["technical-description","exploit"],"name":"Researcher write-up"},{"url":"https://github.com/browserless/browserless/blob/v2.50.1/src/browsers/browsers.cdp.ts#L105-L135","tags":["technical-description"],"name":"the CDP class enforces getAllowFileProtocol"},{"url":"https://github.com/browserless/browserless/blob/v2.50.1/src/browsers/browsers.playwright.ts","tags":["technical-description"],"name":"the Playwright class never consults the setting"},{"url":"https://github.com/browserless/browserless","tags":["product"]},{"url":"https://www.vulncheck.com/advisories/browserless-1.44.0-through-2.56.7-file-protocol-restriction-bypass","name":"VulnCheck Advisory: browserless 1.44.0 through 2.56.7 File Protocol Restriction Bypass","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","lang":"en","description":"Exposure of Sensitive Information to an Unauthorized Actor","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-09-16T20:32:57.539Z"},"datePublic":"2026-09-16T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:browserless:chrome:*:*:*:*:*:*:*:*","versionStartIncluding":"1.44.0","versionEndIncluding":"2.56.7"}]}]}],"credits":[{"lang":"en","value":"George Chen","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-21T15:40:03.577982Z","id":"CVE-2026-92811","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-21T15:40:14.058Z"}}]}}}