High severity · published May 16, 2026
CVE-2021-47954
LayerBB 1.1.4 SQL Injection via search_query Parameter
8.2
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LA
LayerBB · LayerBB
1.1.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-47954
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-47954
www.exploit-db.com
https://www.exploit-db.com/exploits/49593
www.vulncheck.com
https://www.vulncheck.com/advisories/layerbb-sql-injection-via-search-query-parameter
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LayerBB 1.1.1 and 1.1.3 has SQL Injection via the search.php search_query parameter
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CVE-2019-16531
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LayerBB before 1.1.3 allows CSRF for adding a user via admin/new_user.php, deleting a user via admin/members.php/delete_user/, and deleting content via mod/delete.php/