TI-2026-23193 Aliases CVE-2026-29048

HumHub: XSS in Button component

LOW 30CWE-79Published 2026-03-06 · Updated 2026-03-09

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: None · Low · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

HumHub is an Open Source Enterprise Social Network. In version 1.18.0, a cross-site scripting vulnerability was identified in the Button component of version 1.18.0. Due to inconsistent output encoding at several points within the software, malicious scripts could be injected and executed in the context of the user's browser. This issue has been patched in version 1.18.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00225 13th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
humhub	humhub	= 1.18.0	—	No fix listed	CNA

humhub Vendorhumhub Affected = 1.18.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:humhub:humhub:1.18.0:-::::::	1.18.0	Vulnerable	humhub

cpe:2.3:a:humhub:humhub:1.18.0:-:*:*:*:*:*:* Versions 1.18.0 Vulnerable ·humhub

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-29048

References

Patch 2

Advisory 1

https://github.com/humhub/humhub/security/advisories/GHSA-qxjh-478x-23gm

Other 1

https://github.com/humhub/humhub/releases/tag/v1.18.1

TI-2022-08676 Improper access control in humhub CVSS 3.1MEDIUM 6.5
TI-2017-14097 HumHub Reflected cross site scriting CVSS 3.1MEDIUM 6.1
TI-2017-14099 HumHub privileges management CVSS 3.1CRITICAL 9.8
TI-2024-34921 User enumeration in HubHub CVSS 4.0MEDIUM 6.9
TI-2014-07750 SQL injection vulnerability in the actionIndex function in… CVSS 2.0HIGH 7.5
TI-2019-08643 A cross-site scripting (XSS) vulnerability in HumHub 1.3.12 allows remote attackers to… CVSS 3.0MEDIUM 6.1

See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences