---
id: CVE-2026-115541
title: HumHub 1.19.0 - Stored cross-site scripting in friendship confirmation
summary: >-
  HumHub Community Edition 1.19.0 contains a stored cross-site scripting
  vulnerability in the friendship confirmation dialog. An authenticated
  low-privileged member can save HTML in their first and last name. When another
  authenticated use…
severity: high
cvss: 7.2
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N'
cvssSource: cna
cwe:
  - CWE-79
vendor: HumHub
product: HumHub Community Edition
affected:
  - community_edition < 1.18.7
  - community_edition >= 1.19.0 < 1.19.1
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T19:33:12.611938Z'
published: '2026-11-03'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T19:33:23.843Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-115541'
references:
  - url: 'https://fluidattacks.com/advisories/toujours'
  - url: 'https://github.com/humhub/humhub'
  - url: 'https://github.com/humhub/humhub/security/advisories/GHSA-ph8x-wg86-qp2m'
  - url: 'https://github.com/humhub/humhub/pull/8624'
  - url: 'https://github.com/humhub/humhub/pull/8625'
  - url: 'https://github.com/humhub/humhub/releases/tag/v1.19.3'
  - url: 'https://github.com/humhub/humhub/releases/tag/v1.18.7'
tags:
  - cve.org
epss: 0.00401
epssPercentile: 0.3455
ingestedAt: '2026-11-05T20:33:06.530Z'
---

## Overview

HumHub Community Edition 1.19.0 contains a stored cross-site scripting vulnerability in the friendship confirmation dialog. An authenticated low-privileged member can save HTML in their first and last name. When another authenticated user clicks Friends for that profile, HumHub places the decoded display name into a modal through jQuery html(), causing attacker-controlled markup to execute in the victim's HumHub origin.

## Affected

- `community_edition < 1.18.7`
- `community_edition >= 1.19.0 < 1.19.1`

## Remediation

Upgrade the current line to HumHub 1.19.2 or later (1.19.3 is the current release), or the 1.18 maintenance line to 1.18.7 or later. The vendor fixed the issue in 1.19.1 and 1.18.7; 1.19.1 was not separately released.

### Workarounds

If an immediate upgrade is not possible, disable the friendship feature or restrict profile editing to trusted users. Review existing profile names for markup, but treat cleanup as a temporary mitigation rather than a fix.