Cross-site scripting in Cybozu, Inc. Cybozu Remote Service
Priority LOW 25CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
Cross-site scripting vulnerability in the management screen of Cybozu Remote Service 3.1.8 allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors.
Why it matters now
EPSS 0.00605 49th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cybozu, Inc. | Cybozu Remote Service | 3.1.8 | — | No fix listed | CNA |
- Cybozu Remote Service VendorCybozu, Inc. Affected 3.1.8 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cybozu:remote_service_manager:3.1.8:*:*:*:*:*:*:* | 3.1.8 | Vulnerable | Cybozu, Inc. |
- cpe:2.3:a:cybozu:remote_service_manager:3.1.8:*:*:*:*:*:*:* Versions 3.1.8 Vulnerable ·Cybozu, Inc.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20800
- 2026-10-03 Alias added: GHSA-wc8v-fx85-m9p3
References
More Cybozu, Inc. Remote Service Manager vulnerabilities
- TI-2018-11568 Path traversal in Cybozu, Inc. Cybozu Remote Service CVSS 3.0HIGH 8.8
- TI-2018-11566 Unrestricted file upload in Cybozu, Inc. Cybozu Remote Service CVSS 3.0HIGH 8.8
- TI-2021-04020 Cross-site request forgery in Cybozu, Inc. Cybozu Remote Service CVSS 3.1HIGH 8.8
- TI-2018-11567 Path traversal in Cybozu, Inc. Cybozu Remote Service CVSS 3.0HIGH 8.1
- TI-2014-01551 Unspecified vulnerability in Cybozu Remote Service Manager through 2.3.0 and 3.x before… CVSS 2.0HIGH 7.8
- TI-2014-06051 Algorithmic complexity vulnerability in Cybozu Remote Service Manager through 2.3.0 and… CVSS 2.0HIGH 7.8
Sources
- CVE-2021-20800 · CVE Program
- CVE-2021-20800 · NVD
- FIRST EPSS
- GHSA-wc8v-fx85-m9p3 · GitHub Advisory Database · CC BY 4.0
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