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CVE-2026-53963

Discourse: Stored-XSS in 2FA delete confirmation modal PUBLISHED

Description (CNA)

Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, a malicious second factor name on an attacker-controlled account was not escaped in the delete confirmation dialog, allowing stored cross-site scripting when an administrator impersonated that account. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.

Affected (CNA)

Vendor / productVersions
discourse / discourseaffected >= 2026.1.0-latest, < 2026.1.5; affected >= 2026.4.0-latest, < 2026.4.2; affected >= 2026.5.0-latest, < 2026.5.1

CWE

CWE-79

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.