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CVE-2026-93769

HumHub 1.18.5 - Stored XSS in Profile Field Category title via HForm#renderForm leading to System Administrator account takeover

HIGH
7.2
CVSS Score
Published: September 23, 2026 at 03:49 PM UTC
Updated: September 23, 2026 at 05:17 PM UTC
1 product affected across 1 vendorHumHub

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Severity
HIGH7.2
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

HumHub 1.18.5 is affected by a stored cross-site scripting (XSS) vulnerability that allows any user holding the delegated, non-system-administrator Manage Users permission (admin_manage_users) to inject persistent HTML/JavaScript into a Profile Field Category title.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Third Party Advisory
Source: cverecord
https://fluidattacks.com/advisories/cali
Product
Source: cverecord
https://github.com/humhub/humhub
Patch
Source: cverecord
https://github.com/humhub/humhub/pull/8499

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.2HIGHFluid Attacks
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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