CVE-2026-22659

highCVSS 8.1covered by 1 sourcefirst seen 2026-07-10

FlaskBB through 2.2.0, fixed in commit acc88cf, contains an authorization bypass vulnerability that allows authenticated moderators to perform unauthorized actions on topics in forums they do not control by submitting crafted topic ID lists. Attackers can include a low-ID topic from a permitted forum as an anchor in a batch request, causing the permission check applied only to the first result to pass, and then execute lock, unlock, delete, or hide actions against topics in unmoderated forums.

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Advisory coverage (1)

highCVE-2026-22659: FlaskBB through 2.2.0, fixed in commit acc88cf, contains an authorization bypass vulnerability…nvd · 2026-07-10

External references

NVD record for CVE-2026-22659

CVE.org record

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