SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-31761

Webmin 1.973 is affected by reflected Cross Site Scripting (XSS) to achieve Remote Command Execution through Webmin's running process feature.

EXPLOITCRITICAL 9.6EPSS 33.6%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 33.6%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

Webmin 1.973 is affected by reflected Cross Site Scripting (XSS) to achieve Remote Command Execution through Webmin's running process feature.

CVSS 3.1
9.6 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS
33.57% probability · 98th percentile
Public exploits
1 in Exploit-DB · first 20 July 2021
CISA KEV
Not listed
Weakness
CWE-79
Affected
webmin/webmin
Source
cve@mitre.org
EPSS trend
0%18%35%3 November 2026: 33.57%3 November 20263 November 2026

EPSS 33.6% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-50144source ↗Webmin 1.973 - 'run.cgi' Cross-Site Request Forgery (CSRF)linux · Mesh3l_911webapps20 July 2021no

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.