CVE-2020-6637openSIS Community Edition version 7.3 is vulnerable to SQL injection via the USERNAME parameter of index.php.
- 9.8CriticalCVSS base score
- 17.6%Exploitation in 30 daysEPSS · top 2.8% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
openSIS Community Edition version 7.3 is vulnerable to SQL injection via the USERNAME parameter of index.php.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Nuclei template for it.
Show the exploits1
Nuclei templates1 template
- OpenSIS 7.3 - SQL Injection (Nuclei template) (opens in a new tab)
http/cves/2020/CVE-2020-6637.yamlSeverity critical
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 8 months later
· 8 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 17.6% · top 2.8% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
n/a
- affected n/a
References
References4
- https://opensis.com/ (opens in a new tab)x_refsource_MISCx_transferred
- https://sourceforge.net/projects/opensis-ce/files/ (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/OS4ED/openSIS-Responsive-Design/commit/1127ae0bb7c3a2883febeabc6b71ad8d73510de8 (opens in a new tab)x_refsource_MISCx_transferred
- https://cinzinga.com/CVE-2020-6637/ (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-27785 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-6637)Record last updated .