Dashboard / CVE-2026-18430

CVE-2026-18430

HIGH
MEDIUM Priority: 0.03 BB Relevance: 49/100
Published: 2026-08-19 Modified: 2026-10-27 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: High
UI: Passive
S: X
AT: Present
VC: High
VI: High
VA: None

Description

HumHub 1.18.4 contains a stored cross-site scripting vulnerability in the comment-deletion notification flow. A Space administrator can delete another user's comment, choose to notify the original author, and place HTML/JavaScript in the deletion reason.

Weakness Classification (1)

References & Advisories (3)

Bug Bounty Relevance

49 / 100
✓ Network accessible
✓ Low complexity

CVSS Score

7.2 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/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

EPSS — Exploitation Probability

0.47%
Raw Score 0.004660
Percentile 40.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00466
2026-10-28
0.00466

Intelligence Sources

nvd ref →

External Links