Security readout for executives and security teams
Plain-English summary
GROWI versions before v4.2.20 have a NoSQL injection flaw that may let a remote attacker read or change information stored in the database. The public sources do not describe the affected feature, attack path, CVSS score, or observed exploitation.
Executive priority
Prioritize remediation for any internet-facing or broadly accessible GROWI deployment because the stated impact includes database read and alteration. Urgency is reduced only where GROWI is absent, already updated, or tightly isolated.
Technical view
CVE-2021-20736 is a NoSQL injection vulnerability in WESEEK GROWI prior to v4.2.20. The stated impact is unauthorized database information disclosure and/or alteration through unspecified vectors. Public details are limited, so validation should focus on asset/version confirmation and vendor guidance rather than offensive probing.
Likely exposure
Exposure is limited to organizations running GROWI versions prior to v4.2.20, especially instances reachable by untrusted users or the internet. The sources do not identify affected routes, authentication requirements, or configuration dependencies.
Exploitation context
The bundle marks this CVE as not in CISA KEV, and the provided sources do not claim active exploitation or publish exploit details. Treat exploitability as plausible because the issue is remote and database-impacting, but the public attack path is unspecified.
Researcher notes
Public technical detail is sparse: vectors, authentication requirements, CVSS, and vulnerable code paths are not provided in the bundle. Avoid assuming a specific endpoint or exploit method. Use version-based validation and vendor advisories as primary evidence.
Mitigation direction
- Upgrade GROWI to v4.2.20 or later where supported.
- Review WESEEK and JVN guidance for any version-specific instructions.
- Restrict access to GROWI instances until fixed.
- Back up and monitor the database before and after remediation.
- Investigate suspicious database changes or unusual GROWI activity.
Validation and detection
- Inventory all GROWI deployments and record exact versions.
- Confirm no production instance runs a version earlier than v4.2.20.
- Check whether any GROWI instance is internet-accessible.
- Review application and database logs for unexplained reads or modifications.
- Document remediation status and remaining exceptions.
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-2021-20736 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.