Path traversal in Synology SSO Server
Priority LOW 33CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.
Summary
Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in webapi component in Synology SSO Server before 2.2.3-0331 allows remote authenticated users to read arbitrary files via unspecified vectors.
Why it matters now
EPSS 0.01536 75th percentileScored 2026-11-07
Fix Fixed SSO Server (Synology): 2.2.3-0331
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 |
|---|---|---|---|---|---|
| Synology | SSO Server | before 2.2.3-0331 | 2.2.3-0331 | Patch available | CNA |
- SSO Server VendorSynology Affected before 2.2.3-0331 Fixed in 2.2.3-0331 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:synology:sso_server:*:*:*:*:*:*:*:* | before 2.2.3-0331 | Vulnerable | Synology |
| cpe:2.3:o:synology:diskstation_manager:6.2:*:*:*:*:*:*:* | 6.2 | Running on | Synology |
| cpe:2.3:o:synology:diskstation_manager:7.0:*:*:*:*:*:*:* | 7.0 | Running on | Synology |
| cpe:2.3:o:synology:diskstation_manager:7.1:*:*:*:*:*:*:* | 7.1 | Running on | Synology |
- cpe:2.3:a:synology:sso_server:*:*:*:*:*:*:*:* Versions before 2.2.3-0331 Vulnerable ·Synology
- cpe:2.3:o:synology:diskstation_manager:6.2:*:*:*:*:*:*:* Versions 6.2 Running on ·Synology
- cpe:2.3:o:synology:diskstation_manager:7.0:*:*:*:*:*:*:* Versions 7.0 Running on ·Synology
- cpe:2.3:o:synology:diskstation_manager:7.1:*:*:*:*:*:*:* Versions 7.1 Running on ·Synology
Remediation
- Fix · CNA SSO Server (Synology) Fixed in 2.2.3-0331
Timeline
- 2026-10-02 Threatist record created from CVE-2022-27620
- 2026-10-03 Alias added: GHSA-6qj5-cmpw-fvpq
References
More Synology Sso Server vulnerabilities
- TI-2017-12335 Clickjacking in Synology SSO Server CVSS 3.0HIGH 7.1
Sources
- CVE-2022-27620 · CVE Program
- CVE-2022-27620 · NVD
- FIRST EPSS
- GHSA-6qj5-cmpw-fvpq · GitHub Advisory Database · CC BY 4.0
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