Security readout for executives and security teams
Plain-English summary
openSIS 8.0 has a reported SQL injection issue in the login username parameter when backed by MySQL or MariaDB. If exploitable, attackers could interfere with or read application database data. The source bundle does not provide CVSS, a vendor fix version, or evidence of active exploitation.
Executive priority
Prioritize review if openSIS 8.0 supports student, staff, or operational records. Treat internet-exposed deployments as urgent because SQL injection can affect data confidentiality and integrity, even though exploitation evidence is incomplete.
Technical view
CVE-2021-39377 describes SQL injection through index.php's username parameter in openSIS 8.0 using MySQL or MariaDB. The affected database condition is explicit, but the bundle lacks CVSS, CWE mapping, CPEs, patch details, and confirmed exploit-in-the-wild evidence.
Likely exposure
Organizations running openSIS 8.0 with MySQL or MariaDB are the relevant exposure group, especially if the login page is internet-accessible. The source bundle does not identify other affected versions or products.
Exploitation context
CISA KEV status is false in the provided bundle. A public researcher reference exists, but the supplied sources do not establish active exploitation, exploitation scale, or a vendor-confirmed patch timeline.
Researcher notes
The record is sparse: no CVSS, CPEs, CWE IDs, or patch statement are included. Analysis should stay scoped to openSIS 8.0 with MySQL/MariaDB and index.php username handling until vendor or repository evidence confirms broader impact.
Mitigation direction
- Inventory openSIS deployments and confirm version 8.0 usage.
- Confirm whether MySQL or MariaDB backs the application.
- Check official openSIS guidance for fixed versions or configuration advice.
- Restrict public access to the login page where business permits.
- Apply database least privilege for the openSIS application account.
Validation and detection
- Verify openSIS version and database type from administrative records.
- Review application and database logs for suspicious login-related SQL errors.
- Confirm whether index.php login traffic is internet-exposed.
- Check vendor and repository references for remediation status.
- Validate backups and database recovery procedures.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Database behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-39377 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://opensis.com/CVE reference · x_refsource_MISC
- https://github.com/OS4ED/openSIS-ClassicCVE reference · x_refsource_MISC
- https://github.com/security-n/CVE-2021-39377CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.