SQL Injection in Layerbb
CVE-2021-47954
LayerBB 1.1.4 contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate database queries by injecting SQL code through the search_query parameter. Attackers can send POST requests to /search.php with malicious search_query values using CASE WHEN statements to extract sensitive database information.
Vulnerability class: SQL Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (13.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Layerbb — versions 1.1.4
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/49593 (exploit)
- www.vulncheck.com/advisories/layerbb-sql-injection-via-search-query-parameter (third-party-advisory)
Frequently asked questions
- What is CVE-2021-47954?
- CVE-2021-47954 is a high-severity vulnerability in Layerbb, classified under SQL Injection. CVSS score: 8.2/10. Published 2026-05-16.
- How severe is CVE-2021-47954?
- High severity. CVSS v3 base score is 8.2 out of 10.