What’s Vulnerable › Vulnerabilities

CVE-2019-11827

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-06-30 · updated 2026-06-17
• Weakness: CWE-79

Description

Cross-site scripting (XSS) vulnerability in SYNO.NoteStation.Shard in Synology Note Station before 2.5.3-0863 allows remote attackers to inject arbitrary web script or HTML via the object_id parameter.

Affected products

• Synology Note Station: before 2.5.3-0863 — fixed in 2.5.3-0863

How to fix

Upgrade to a fixed version: Synology Note Station 2.5.3-0863. Check the vendor advisory for mitigations.

References

• https://www.synology.com/security/advisory/Synology_SA_19_08
• https://www.synology.com/security/advisory/Synology_SA_19_08

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