CVE-2026-22660
FlaskBB through 2.2.0, fixed in commit a5da9a5, contains a logic flaw vulnerability that allows authenticated administrators to delete all built-in authorization groups by exploiting a type mismatch in the bulk delete protection check. The bulk AJAX endpoint in the management views compares received JSON integer group IDs against string literals, causing the protection check to always pass, which allows deletion of all six built-in groups and destroys the forum's permission model, potentially rendering the site unusable.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.6
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- EPSS probability
- 0.61%
- CWE
- CWE-697
- Published
- 2026-07-10
- Last modified
- 2026-07-14
Affected products
- flaskbb flaskbb
- flaskbb flaskbb
Weakness type
Related vulnerabilities
- CVE-2026-64836 — ICEcoder through 8.1 Path Traversal via Ineffective File::check() Confinement
- CVE-2026-56101 — OpenBSD ieee80211_crypto_tkip.c TKIP MIC Countermeasure Logic Inversion DoS
- CVE-2026-73309 — XenForo < 2.3.13 Authentication Bypass via OAuth2 Token Endpoint
- CVE-2026-80227 — SQL string_trim removes only spaces, diverging from in-memory trimming in AshSql
- CVE-2026-18664 — Wrong interpretation of ACL ranges
- CVE-2026-73258 — Mongoose: Multipart boundary/header scan logic error in mg_http_next_multipart
- CVE-2026-75110 — MemOS Authentication Bypass via Unset INTERNAL_SERVICE_SECRET
- CVE-2026-50029 — js-toml has silent type confusion via falsy-primitive duplicate-key bypass