Medium severity5.4NVD Advisory· Published Apr 29, 2026· Updated May 1, 2026

CVE-2026-40230

Description

Helpy contains a stored cross-site scripting vulnerability in the knowledge base Doc rendering logic. An authenticated attacker with admin or agent editor privileges can persist arbitrary HTML or JavaScript in the body field of a knowledge base Doc.This issue affects helpy: 2.8.0.

Affected products

Helpy.io/Helpy
cpe:2.3:a:helpy.io:helpy:2.8.0:*:*:*:*:*:*:*

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

fluidattacks.com/es/advisories/prisionerosnvdExploitThird Party Advisory

News mentions

No linked articles in our index yet.

Severity

MediumCVSS v3.1

5.4/ 10

CVSS v44.8

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/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:X

Attack vector: Network
Complexity: Low
Privileges: Low
User interaction: Required
Scope: Changed
Confidentiality: Low
Integrity: Low
Availability: None

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS

Probability of exploitation in the next 30 days.

0.03%

VYPR risk score

Composite of severity, exploitation, and reach.

0.35medium

cvss	0.351
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000

Weaknesses

CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVE ID

CVE-2026-40230

Source code

github.com/helpyio/helpy

Credits

FA
Fluid Attacks' AI SAST Scanner
finder
OU
Oscar Uribe
finder