CVE-2020-18662
CVE-2020-18662 is a critical-severity vulnerability in Sir Gnuboard with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 5% (92nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-89
- Affected product: Sir Gnuboard
- Published:
- Last modified:
Description
SQL Injection vulnerability in gnuboard5 <=v5.3.2.8 via the table_prefix parameter in install_db.php.
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 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-18662 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-18662?
- CVE-2020-18662 affects Sir Gnuboard. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-18662?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2020-18662 published?
- CVE-2020-18662 was published on 2021-06-24 and last updated on 2026-06-17.
References
- https://github.com/LoRexxar/CVE_Request/tree/master/gnuboard5%20mul%20vuls%20before%20v5.3.2.8#sql-injection-in-install_dbphp
- https://github.com/gnuboard/gnuboard5/issues/43
- https://www.seebug.org/vuldb/ssvid-97927
Affected products (1)
- cpe:2.3:a:sir:gnuboard:*:*:*:*:*:*:*:*
More vulnerabilities in Sir Gnuboard
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- CVE-2022-1252 — High (CVSS 8.2): Use of a Broken or Risky Cryptographic Algorithm in GitHub repository gnuboard/gnuboard5 prior to and including 5.5.5.…
- CVE-2022-44216 — High (CVSS 7.5): Gnuboard 5.5.4 and 5.5.5 is vulnerable to Insecure Permissions. An attacker can change password of all users without…
- CVE-2011-4066 — High (CVSS 7.5): SQL injection vulnerability in bbs/tb.php in Gnuboard 4.33.02 and earlier allows remote attackers to execute arbitrary…
- CVE-2004-1403 — High (CVSS 7.5): PHP remote file inclusion vulnerability in index.php in GNUBoard 3.39 and earlier allows remote attackers to execute…
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