CVE-2026-18430 — HumHub 1.18.4 - Stored XSS in comment-deletion notifications through unescaped administrator reason

CVE-2026-18430

HumHub 1.18.4 - Stored XSS in comment-deletion notifications through unescaped administrator reason PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
HumHub / HumHub	affected 1.18.4

CWE

CWE-79

References

https://fluidattacks.com/es/advisories/personajes
https://github.com/humhub/humhub/pull/8365
https://github.com/humhub/humhub

ADP enrichment

CISA-ADP

No English description supplied.

https://fluidattacks.com/es/advisories/personajes