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OpenAdvisories
Medium · 5.3 CVE-2025-53532 EUVD-2025-20284

giscus allows unauthorized discussion creation

Published Jul 7, 2025 · Updated Jul 7, 2025 · Assigned by GitHub_M

Description

giscus is a commenting system powered by GitHub Discussions. A bug in giscus' discussions creation API allowed an unauthorized user to create discussions on any repository where giscus is installed. This affects the server-side part of giscus, which is provided via http://giscus.app or your own self-hosted service. This vulnerability is fixed by the c43af7806e65adfcf4d0feeebef76dc36c95cb9a and 4b9745fe1a326ce08d69f8a388331bc993d19389 commits.

Affected products

VendorProductAffectedFixed
giscus giscus < c43af7806e65adfcf4d0feeebef76dc36c95cb9a —

References