Security readout for executives and security teams
Plain-English summary
CVE-2021-20737 affects WESEEK GROWI before v4.2.20. A remote attacker may view pages they should not be allowed to access. Treat this as a confidentiality risk for internal wiki content, especially if GROWI stores operational, customer, or security information.
Executive priority
Prioritize remediation if GROWI hosts confidential internal knowledge or is exposed beyond a trusted network. The known impact is unauthorized viewing, not code execution, but business sensitivity depends on wiki content.
Technical view
The public record describes an improper authentication flaw in GROWI versions prior to v4.2.20. The vulnerability allows unauthorized page viewing via unspecified vectors. No CVSS, CWE, or detailed attack path is provided in the supplied sources.
Likely exposure
Organizations running GROWI before v4.2.20 are potentially exposed, particularly internet-accessible or broadly reachable wiki deployments containing restricted pages.
Exploitation context
The supplied CVE data does not show CISA KEV listing, active exploitation, exploit availability, or weaponized use. The attack vector is remote, but the exact method is unspecified in the provided sources.
Researcher notes
Evidence is limited to public summaries. The affected product and fixed version boundary are clear, but technical root cause, prerequisites, and reliable detection indicators are not specified in the supplied bundle.
Mitigation direction
- Upgrade GROWI to v4.2.20 or later.
- Review WESEEK and JVN guidance for any deployment-specific instructions.
- Restrict network access to GROWI until upgraded.
- Review sensitive wiki pages and permission boundaries.
Validation and detection
- Inventory all GROWI instances and record their versions.
- Confirm no deployment is running a version earlier than v4.2.20.
- Check whether restricted pages contain sensitive operational or customer data.
- Review access logs for unusual page views before remediation.
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.
CVE-2021-20737 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://weseek.co.jp/security/2021/06/14/vulnerability/growi-nosql-ingection/CVE reference · x_refsource_MISC
- https://jvn.jp/en/jp/JVN95457785/index.htmlCVE 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.