SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2020-29240

Lepton-CMS 4.7.0 is affected by cross-site scripting (XSS).

EXPLOITMEDIUM 4.8EPSS 1.69%

Does this matter?

A public exploit is published in Exploit-DB, so the technical barrier is gone even though the severity is medium and EPSS is 1.7%. Treat it as high on anything reachable from the internet.

Description

Lepton-CMS 4.7.0 is affected by cross-site scripting (XSS). An attacker can inject the XSS payload in the URL field of the admin page and each time an admin visits the Menu-Pages-Pages Overview section, the XSS will be triggered.

CVSS 3.1
4.8 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
EPSS
1.69% probability · 77th percentile
Public exploits
1 in Exploit-DB · first 1 December 2020
CISA KEV
Not listed
Weakness
CWE-79
Affected
lepton-cms/leptoncms
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 1.69%26 October 202626 October 2026

EPSS 1.7% since 26 October 2026; no change recorded yet. 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-49137source ↗LEPTON CMS 4.7.0 - 'URL' Persistent Cross-Site Scriptingphp · Sagar Banwawebapps1 December 2020no

References

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