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CVE-2026-49144

BrowserStack Runner through 0.9.5 contains a path traversal vulnerability in the _default HTTP handler in lib/server.js that allows unauthenticated network-adjacent attackers to read arbitrary files. Attackers can exploit the unauthenticated HTTP server bound on all interfaces to traverse outside the project root and access sensitive files.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2bba9628ca92eb0bcd7bcd6016ae1c248e377b5a2ea63b4e714d123c6415f8ee
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a728c91639e57711fcae37b41aa36eac0bffc5faf3fef39aae3174984327b16b · sha256:fc7dc13597adae8c… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":7.1,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a728c91639e57711fcae37b41aa36eac0bffc5faf3fef39aae3174984327b16b · sha256:fc7dc13597adae8c… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"affected","packageURL":"pkg:github/browserstack/browserstack-runner","product":"browserstack-runner","repo":"https://github.com/browserstack/browserstack-runner","vendor":"browserstack","versions":[{"lessThanOrEqual":"0.9.5","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a728c91639e57711fcae37b41aa36eac0bffc5faf3fef39aae3174984327b16b · sha256:fc7dc13597adae8c… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a728c91639e57711fcae37b41aa36eac0bffc5faf3fef39aae3174984327b16b · sha256:fc7dc13597adae8c… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":7.1,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a728c91639e57711fcae37b41aa36eac0bffc5faf3fef39aae3174984327b16b · sha256:fc7dc13597adae8c… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-22","description":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a728c91639e57711fcae37b41aa36eac0bffc5faf3fef39aae3174984327b16b · sha256:fc7dc13597adae8c… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["vendor-advisory"],"url":"https://github.com/browserstack/browserstack-runner/security/advisories/GHSA-8rpw-6cqh-2v9h"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a728c91639e57711fcae37b41aa36eac0bffc5faf3fef39aae3174984327b16b · sha256:fc7dc13597adae8c… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/browserstack/browserstack-runner/security/advisories/GHSA-8rpw-6cqh-2v9h"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a728c91639e57711fcae37b41aa36eac0bffc5faf3fef39aae3174984327b16b · sha256:fc7dc13597adae8c… · /containers/adp/0/references/0
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/browserstack-runner-path-traversal-via-default-http-handler"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a728c91639e57711fcae37b41aa36eac0bffc5faf3fef39aae3174984327b16b · sha256:fc7dc13597adae8c… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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