Security readout for executives and security teams
Plain-English summary
Cybozu Garoon versions 4.0.0 through 5.0.2 have a cross-site scripting issue in Full Text Search. An authenticated remote user could inject script into the application. The available sources do not provide CVSS, detailed vectors, or evidence of active exploitation.
Executive priority
Treat this as a moderate-priority application security issue. It requires authenticated access, which lowers urgency, but successful XSS in a business collaboration platform can affect user sessions and trusted internal workflows. Prioritize remediation for internet-exposed or broadly accessible Garoon instances.
Technical view
CVE-2021-20767 is an XSS vulnerability affecting Full Text Search in Cybozu Garoon 4.0.0 to 5.0.2. The source description says a remote authenticated attacker can inject arbitrary script via unspecified vectors. No CWE, CVSS, or detailed attack path is provided in the bundle.
Likely exposure
Exposure is limited to organizations running Cybozu Garoon 4.0.0 through 5.0.2, especially where authenticated users can access Full Text Search. The sources do not clarify deployment type, tenant scope, or whether unauthenticated users can reach any related surface.
Exploitation context
The bundle supports remote authenticated exploitation in principle, but not active exploitation. The CVE is not listed as KEV, and the supplied sources do not cite public exploit activity, weaponized tooling, or exploitation in the wild.
Researcher notes
The key evidence gap is specificity: the vector is listed as unspecified, and no CVSS, CWE, payload details, or exploit status is included. Validation should focus on version exposure, access scope, and vendor advisory details rather than independent exploit reproduction.
Mitigation direction
- Review Cybozu and JVN advisories for vendor-approved fixed versions or mitigations.
- Upgrade or patch Cybozu Garoon according to vendor guidance.
- Restrict Garoon access to trusted authenticated users until remediation is complete.
- Monitor Garoon activity for suspicious script-like content or unexpected Full Text Search behavior.
Validation and detection
- Inventory Cybozu Garoon deployments and confirm exact product versions.
- Check whether affected versions 4.0.0 through 5.0.2 are present.
- Confirm which users can access Full Text Search.
- Review vendor advisories for remediation status and version guidance.
- Check security logs for unusual authenticated activity around search features.
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-2021-20767 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://cs.cybozu.co.jp/2021/007206.htmlCVE reference · x_refsource_MISC
- https://jvn.jp/en/jp/JVN54794245/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.