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CVE-2026-49973

Hermes WebUI before version 0.51.358 contains an improper access control vulnerability that allows unauthenticated remote attackers to hijack initial setup by submitting the _set_password parameter to the settings API endpoint without any network origin restriction. Attackers on any reachable network can send a POST request to the settings endpoint during the first-run setup window to persist an arbitrary password hash, obtain a valid session cookie, and lock out the legitimate operator from the
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5b108d63233baba939dc3b971300225acebe4d74e6dfd6fb5be992fdb9c65048
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":"NETWORK","availabilityImpact":"LOW","baseScore":9.4,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2ac45ee434b15a850db9bba031332d186313eae066a9eeb5afbd619101b3324a · sha256:4a07a9575e7987f8… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":9.2,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImp…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2ac45ee434b15a850db9bba031332d186313eae066a9eeb5afbd619101b3324a · sha256:4a07a9575e7987f8… · /containers/cna/metrics/0/cvssV4_0

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":"0.51.358","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2ac45ee434b15a850db9bba031332d186313eae066a9eeb5afbd619101b3324a · sha256:4a07a9575e7987f8… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":9.4,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2ac45ee434b15a850db9bba031332d186313eae066a9eeb5afbd619101b3324a · sha256:4a07a9575e7987f8… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":9.2,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImp…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2ac45ee434b15a850db9bba031332d186313eae066a9eeb5afbd619101b3324a · sha256:4a07a9575e7987f8… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-306","description":"Missing Authentication for Critical Function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2ac45ee434b15a850db9bba031332d186313eae066a9eeb5afbd619101b3324a · sha256:4a07a9575e7987f8… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"tags":["patch"],"url":"https://github.com/nesquena/hermes-webui/commit/1126e541325d401538f6a272a9c024c37d47ae08"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ac45ee434b15a850db9bba031332d186313eae066a9eeb5afbd619101b3324a · sha256:4a07a9575e7987f8… · /containers/cna/references/3
{"tags":["exploit"],"url":"https://github.com/nesquena/hermes-webui/pull/3964"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ac45ee434b15a850db9bba031332d186313eae066a9eeb5afbd619101b3324a · sha256:4a07a9575e7987f8… · /containers/adp/0/references/0
{"tags":["issue-tracking"],"url":"https://github.com/nesquena/hermes-webui/pull/3964"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ac45ee434b15a850db9bba031332d186313eae066a9eeb5afbd619101b3324a · sha256:4a07a9575e7987f8… · /containers/cna/references/1
{"tags":["issue-tracking"],"url":"https://github.com/nesquena/hermes-webui/pull/3973"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ac45ee434b15a850db9bba031332d186313eae066a9eeb5afbd619101b3324a · sha256:4a07a9575e7987f8… · /containers/cna/references/2
{"tags":["release-notes"],"url":"https://github.com/nesquena/hermes-webui/releases/tag/v0.51.358"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ac45ee434b15a850db9bba031332d186313eae066a9eeb5afbd619101b3324a · sha256:4a07a9575e7987f8… · /containers/cna/references/0
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/hermes-webui-unauthenticated-password-takeover-via-api-settings"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ac45ee434b15a850db9bba031332d186313eae066a9eeb5afbd619101b3324a · sha256:4a07a9575e7987f8… · /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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