PT-2026-78489 · Humhub · Humhub

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CVE-2026-18430

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Published

2026-08-19

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Updated

2026-08-19

CVSS v4.0

7.2

High

VectorAV: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
Name of the Vulnerable Software and Affected Versions HumHub version 1.18.4
Description A stored cross-site scripting issue exists in the comment-deletion notification flow. A Space administrator can exploit this by deleting another user's comment and inserting HTML or JavaScript into the deletion reason when choosing to notify the original author.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

XSS

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Weakness Enumeration

Related Identifiers

CVE-2026-18430

Affected Products

Humhub