CVE-2026-18526

Description

HumHub Community Edition 1.18.4 and 1.18.4-pl1 contain a stored Cross-Site Scripting (XSS) vulnerability in the oEmbed confirmation rendering workflow.

References

• https://fluidattacks.com/advisories/greeicy
• https://github.com/humhub/humhub
• https://github.com/humhub/humhub/pull/8373