Is CVE-2026-53962 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-53962?

CVE-2026-53962 has a CVSS v3 severity of MEDIUM (5.4).

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CVE-2026-53962

Description

Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, insufficient SVG sanitization in upload and user avatar handling could lead to cross-site scripting when a user visited specific URLs that are not normally part of community browsing. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.