CVE-2026-56020

highpriority · track · 0EPSS 0.005 · 42 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.50% (42nd) EPSS

CVSS 8.1 · high

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · cisa_csaf_it

EPSS · scored 2026-10-27

The Webmin HTTP server (miniserv.pl) allows unauthenticated attackers to impersonate any user with a configured SSL client certificate by sending a forged HTTP header. A remote attacker can spoof certificate DNs and authenticate as any user. Fixed in 2.202.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedWebmincisa_csaf_it
Fixed in 2.202.

cvss

Technical severity, 0–10. One row per scoring source.

9.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.2–9.2

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 2.2 · impact 5.9

v4.09.2criticalCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.09.2criticalCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary

v4.07.2highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-290USCWE-290US

affected products (7)

Products and version ranges known to be affected.

Open Source Webmin <2.641all versionscert_bundDE
Open Source Webmin< 2.641cert_bundDE
Webmin Webmin 2.202all versionsfixedcisa_csaf_itUS
Webmin Webmin <2.202all versionscisa_csaf_itUS
Webmin Webminall versionsfixedcisa_csaf_itUS
Webmin Webmin< 2.202cisa_csaf_itUS
Webmin Webmin0 → 2.202enisa_euvdEU

advisories (2)

Vendor and ecosystem advisories describing this.

VA-26-169-02Webmin multiple vulnerabilities2026-06-18csaf · cisa_csaf_itUS
Webmin contains multiple vulnerabilities. In the worst case, a remote, unauthenticated attacker could impersonate and authenticate as any user.
WID-SEC-W-2026-2014Webmin: Mehrere SchwachstellenDeutsch2026-06-18csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Webmin ausnutzen, um falsche Informationen darzustellen, um Informationen offenzulegen, und um Sicherheitsvorkehrungen zu umgehen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund cisa_csaf_it NVD CVE.org MITRE

published 2026-06-18modified 2026-08-11

references (13)

External citations — patches, advisories, analysis.

scry

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