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CVE-2026-42210

Webmin is a web-based system administration tool for Unix-like servers. Prior to version 2.640, for Webmin accounts that require a second authentication factor (typically TOTP), an attacker with knowledge of the username and password can bypass the 2FA requirement by using Basic authentication. Webmin is a web-based system administration tool for Unix-like servers. As a workaround, apply the patch from commit da18a16c84ae5c0b78cad79609cb0efb174000ec manually.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:29b4c288e309b22bc03df6bb3789a0687915633d0b70f1b145e63ec4e6a846fc
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"webmin","vendor":"webmin","versions":[{"status":"affected","version":"< 2.640"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:90921894e994fbbef3def86dbacfe7f02113281c9aad4c08da73b33a743d6a09 · sha256:555bb3cb66169b52… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:90921894e994fbbef3def86dbacfe7f02113281c9aad4c08da73b33a743d6a09 · sha256:555bb3cb66169b52… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-287","description":"CWE-287: Improper Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:90921894e994fbbef3def86dbacfe7f02113281c9aad4c08da73b33a743d6a09 · sha256:555bb3cb66169b52… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/webmin/webmin/commit/da18a16c84ae5c0b78cad79609cb0efb174000ec","tags":["x_refsource_MISC"],"url":"https://github.com/webmin/webmin/commit/da18a16c84ae5c0b78cad79609cb0efb174000ec"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:90921894e994fbbef3def86dbacfe7f02113281c9aad4c08da73b33a743d6a09 · sha256:555bb3cb66169b52… · /containers/cna/references/1
{"name":"https://github.com/webmin/webmin/security/advisories/GHSA-qpww-fff2-6fgv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/webmin/webmin/security/advisories/GHSA-qpww-fff2-6fgv"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:90921894e994fbbef3def86dbacfe7f02113281c9aad4c08da73b33a743d6a09 · sha256:555bb3cb66169b52… · /containers/cna/references/0

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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