CVE-2026-22660
HIGHDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Moderate risk: more likely to be exploited than 46% of all known CVEs.
References
Related Vulnerabilities
Other CWE-697 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-5217 | Critical | 9.8 | 100% | KEV | - |
| CVE-2020-5849 | High | 7.5 | 93% | KEV | - |
| CVE-2020-8864 | High | 8.8 | 80% | - | - |
| CVE-2025-3102 | High | 8.1 | 76% | - | - |
| CVE-2023-32571 | Critical | 9.8 | 35% | - | - |
| CVE-2020-8862 | High | 8.8 | 13% | - | - |
Common questions
How do I fix CVE-2026-22660?
No published fix for CVE-2026-22660 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-22660 being actively exploited?
Not that we know of. CVE-2026-22660 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.61% is the estimated probability that it will be exploited in the next 30 days. That is higher than 46% of all scored CVEs.
How severe is CVE-2026-22660?
CVE-2026-22660 has a CVSS v3 base score of 7.2, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
Embed a live status badge for CVE-2026-22660
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-14.