Path traversal in Synology Calendar
Priority LOW 25CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · 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 Calendar before 2.3.4-0631 allows remote authenticated users to download arbitrary files via unspecified vectors.
Why it matters now
EPSS 0.00933 60th percentileScored 2026-11-07
Fix Fixed Synology Calendar (Synology): 2.3.4-0631
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 | Synology Calendar | before 2.3.4-0631 | 2.3.4-0631 | Patch available | CNA |
- Synology Calendar VendorSynology Affected before 2.3.4-0631 Fixed in 2.3.4-0631 Patch available CNA
Remediation
- Fix · CNA Synology Calendar (Synology) Fixed in 2.3.4-0631
Timeline
- 2026-10-02 Threatist record created from CVE-2022-27617
- 2026-10-03 Alias added: GHSA-fqf3-wwvm-vgr9
References
More Synology Calendar vulnerabilities
- TI-2019-08865 OS command injection in Synology Calendar CVSS 3.1CRITICAL 9.8
- TI-2022-06947 Cross-site request forgery in Synology Calendar CVSS 3.1HIGH 8.0
- TI-2021-13806 Hard-coded credentials in Synology Calendar CVSS 3.1HIGH 7.5
- TI-2018-09547 Path traversal in Synology Calendar CVSS 3.0MEDIUM 6.5
- TI-2018-06465 Incorrect authorization in Synology Calendar CVSS 3.0MEDIUM 6.5
- TI-2017-11638 Improper access control in Synology Calendar CVSS 3.0MEDIUM 6.5
Sources
- CVE-2022-27617 · CVE Program
- CVE-2022-27617 · NVD
- FIRST EPSS
- GHSA-fqf3-wwvm-vgr9 · GitHub Advisory Database · CC BY 4.0
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