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CVE-2026-49957

Hermes WebUI before version 0.51.296 contains a workspace boundary bypass vulnerability that allows authenticated attackers to circumvent blocked-root path checks by exploiting an early return in the SSH/remote terminal profile workspace resolution logic within _remote_terminal_workspace_candidate(). Attackers can configure a remote terminal working directory to a system directory such as /etc, causing the workspace resolution path to accept it as a trusted local workspace root before the _is_bl
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1212802c6393754a2c824fbc8a016a6257521d118db13f441ac2bb441b6c52b0
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":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:125153e9a950878f6a5e5f2eb0ae14d686af76e570b62b8e1b488bfb1ef8341d · sha256:5adf2a1a4c2592b6… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:125153e9a950878f6a5e5f2eb0ae14d686af76e570b62b8e1b488bfb1ef8341d · sha256:5adf2a1a4c2592b6… · /containers/cna/metrics/1/cvssV3_1

Affected products and versions

1 source assertion
{"defaultStatus":"affected","packageURL":"pkg:github/nesquena/hermes-webui","product":"hermes-webui","repo":"https://github.com/nesquena/hermes-webui","vendor":"nesquena","versions":[{"lessThan":"0.51.296","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:125153e9a950878f6a5e5f2eb0ae14d686af76e570b62b8e1b488bfb1ef8341d · sha256:5adf2a1a4c2592b6… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:125153e9a950878f6a5e5f2eb0ae14d686af76e570b62b8e1b488bfb1ef8341d · sha256:5adf2a1a4c2592b6… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:125153e9a950878f6a5e5f2eb0ae14d686af76e570b62b8e1b488bfb1ef8341d · sha256:5adf2a1a4c2592b6… · /containers/cna/metrics/1/cvssV3_1

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:v2:125153e9a950878f6a5e5f2eb0ae14d686af76e570b62b8e1b488bfb1ef8341d · sha256:5adf2a1a4c2592b6… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["patch"],"url":"https://github.com/nesquena/hermes-webui/commit/91a89fb5d5c0bf87932917f9914ad0150ea62fe4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:125153e9a950878f6a5e5f2eb0ae14d686af76e570b62b8e1b488bfb1ef8341d · sha256:5adf2a1a4c2592b6… · /containers/cna/references/3
{"tags":["issue-tracking"],"url":"https://github.com/nesquena/hermes-webui/pull/3731"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:125153e9a950878f6a5e5f2eb0ae14d686af76e570b62b8e1b488bfb1ef8341d · sha256:5adf2a1a4c2592b6… · /containers/cna/references/1
{"tags":["issue-tracking"],"url":"https://github.com/nesquena/hermes-webui/pull/3744"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:125153e9a950878f6a5e5f2eb0ae14d686af76e570b62b8e1b488bfb1ef8341d · sha256:5adf2a1a4c2592b6… · /containers/cna/references/2
{"tags":["release-notes"],"url":"https://github.com/nesquena/hermes-webui/releases/tag/v0.51.296"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:125153e9a950878f6a5e5f2eb0ae14d686af76e570b62b8e1b488bfb1ef8341d · sha256:5adf2a1a4c2592b6… · /containers/cna/references/0
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/hermes-webui-workspace-boundary-bypass-via-api-workspace-py"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:125153e9a950878f6a5e5f2eb0ae14d686af76e570b62b8e1b488bfb1ef8341d · sha256:5adf2a1a4c2592b6… · /containers/cna/references/4

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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