Paper/Archive/CVE-2026-49103

CVE-2026-49103

Webmin Webmin — Webmin before 2.640 does not safely construct a filename for saving of an attachment within the mailboxes component.

EPSS 0.4%CVSS 9.4

critical.is priorityof 100

CVSS 9.4 (CNA)9.4 / 10 × 3028.2 Not in CISA KEV+300.0 EPSS percentile 33.9.339 × 206.8 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

Webmin before 2.640 does not safely construct a filename for saving of an attachment within the mailboxes component. This occurs in mailboxes/detachall.cgi.

Affected

ProductAffectedFixed inSource

Webmin< 2.6402.640CNA

Scores by source

mitre (CNA)9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/webmin/webmin/commit/cf432879a14568c4bb44cd2f9e5a9bd0e168edc1 refgithub.com/webmin/webmin/compare/2.630...2.640