CVE-2020-18662

Name: CVE-2020-18662
Creator: NVD / NIST
Published: 2021-06-24T16:15:08.163+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 5.38%

Last modified Jun 17, 2026

CVE-2020-18662 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. SQL Injection vulnerability in gnuboard5 <=v5.3.2.8 via the table_prefix parameter in install_db.php.. EPSS estimates a 5.38% chance of exploitation in the next 30 days.

Description

SQL Injection vulnerability in gnuboard5 <=v5.3.2.8 via the table_prefix parameter in install_db.php.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

5.38%

91.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Sir	Gnuboard	<= 5.3.2.8

References

https://github.com/LoRexxar/CVE_Request/tree/master/gnuboard5%20mul%20vuls%20before%20v5.3.2.8#sql-injection-in-install_dbphpThird Party Advisory
https://github.com/gnuboard/gnuboard5/issues/43Exploit, Technical Description
https://www.seebug.org/vuldb/ssvid-97927Third Party Advisory
https://github.com/LoRexxar/CVE_Request/tree/master/gnuboard5%20mul%20vuls%20before%20v5.3.2.8#sql-injection-in-install_dbphpThird Party Advisory
https://github.com/gnuboard/gnuboard5/issues/43Exploit, Technical Description
https://www.seebug.org/vuldb/ssvid-97927Third Party Advisory

Timeline

Published: Jun 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-18662?

SQL Injection vulnerability in gnuboard5 <=v5.3.2.8 via the table_prefix parameter in install_db.php.

How severe is CVE-2020-18662?

CVE-2020-18662 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 5.38% probability of exploitation in the next 30 days.

How do I fix CVE-2020-18662?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-18662?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST