SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-40383

An improper validation of user-supplied input leads to a local file inclusion vulnerability.

HIGH 7.5EPSS 12.5%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 12.5%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

Description

An improper validation of user-supplied input leads to a local file inclusion vulnerability.

CVSS 4.0
7.5 HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:H/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/M
EPSS
12.52% probability · 96th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-22
Affected
joomla/joomla\!
Source
security@joomla.org
EPSS trend
0%8%15%25 October 2026: 12.52%30 October 2026: 12.52%25 October 202630 October 2026

EPSS moved from 12.5% on 25 October 2026 to 12.5% on 30 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

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