CVE-2025-56869
CVE-2025-56869 is a medium-severity vulnerability in Sync-in Sync-in Server with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- EPSS exploit prediction: 1% (48th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-30327
- Weakness: CWE-22
- Affected product: Sync-in Sync-in Server
- Published:
- Last modified:
Description
Directory traversal vulnerability in Sync In server thru 1.1.1 allowing authenticated attackers to gain read and write access to the system via FilesManager.saveMultipart function in backend/src/applications/files/services/files-manager.service.ts, and FilesManager.compress function in backend/src/applications/files/services/files-manager.service.ts.
Frequently asked questions
- What is CVE-2025-56869?
- Directory traversal vulnerability in Sync In server thru 1.1.1 allowing authenticated attackers to gain read and write access to the system via FilesManager.saveMultipart function in backend/src/applications/files/services/files-manager.service.ts, and FilesManager.compress function in backend/src/applications/files/services/files-manager.service.ts.
- How severe is CVE-2025-56869?
- CVE-2025-56869 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2025-56869 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-56869?
- CVE-2025-56869 affects Sync-in Sync-in Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-56869?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-56869 have an EU (EUVD) identifier?
- Yes. CVE-2025-56869 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-30327.
- When was CVE-2025-56869 published?
- CVE-2025-56869 was published on 2025-09-19 and last updated on 2026-06-17.
References
- https://github.com/Sync-in/server
- https://github.com/Sync-in/server/releases/tag/v1.2.0
- https://sync-in.com/
Affected products (1)
- cpe:2.3:a:sync-in:sync-in_server:*:*:*:*:*:*:*:*
More vulnerabilities in Sync-in Sync-in Server
- CVE-2025-67438 — Medium (CVSS 6.1): A Stored Cross-Site Scripting (XSS) vulnerability in Sync-in Server before 1.9.3 allows an authenticated attacker to…
- CVE-2026-41161 — Medium (CVSS 5.3): Sync-in Server is a secure, open-source platform for file storage, sharing, collaboration, and syncing. Prior to…
All CVEs affecting Sync-in Sync-in Server →
Other CWE-22 (Path Traversal) vulnerabilities
- CVE-2026-48282 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted…
- CVE-2026-54917 — Critical (CVSS 10.0): SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the…
- CVE-2026-11429 — Critical (CVSS 10.0): Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file…
- CVE-2026-34909 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to…
- CVE-2026-7411 — Critical (CVSS 10.0): In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, inadequate path normalization in the Submodel…
- CVE-2026-36767 — Critical (CVSS 10.0): A path traversal vulnerability in the /content/images/add endpoint of shopizer v3.2.5 allows attackers write arbitrary…