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Vulnerability record · CVE-2018-8921 · published 1 June 2018

CVE-2018-8921: Synology drive server cross-site scripting vulnerability

Synology · Drive Server

Cross-site scripting (XSS) vulnerability in File Sharing Notify Toast in Synology Drive before 1.0.2-10275 allows remote authenticated users to inject arbitrary web script or HTML via the malicious file name.

5.4 CVSS 3.0 Medium EPSS 0.62% · top 52.3% CWE-79 · Cross-site scripting
5.4CVSS 3.0 base score, v2 3.5
0.62%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Cross-site scripting (XSS) vulnerability in File Sharing Notify Toast in Synology Drive before 1.0.2-10275 allows remote authenticated users to inject arbitrary web script or HTML via the malicious file name.

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.synology.com/en-global/support/security/Synology_SA_18_11 Vendor Advisory
https://www.synology.com/en-global/support/security/Synology_SA_18_11 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2024-50630Synology drive server missing authentication for critical function vulnerabilityMissing authentication for critical function vulnerability in the webapi component in Synology Drive Server before 3.0.4-12699, 3.2.1-23280, 3.5.0-26…EPSS 25%7.5CVE-2024-50631Synology drive server sql injection vulnerabilityImproper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in the system syncing daemon in Synology Drive Ser…EPSS 26%6.5CVE-2018-8922Synology drive server improper access control vulnerabilityImproper access control vulnerability in Synology Drive before 1.0.2-10275 allows remote authenticated users to access non-shared files or folders vi…EPSS 0.92%5.4CVE-2018-8910Synology drive server cross-site scripting vulnerabilityCross-site scripting (XSS) vulnerability in Attachment Preview in Synology Drive before 1.0.1-10253 allows remote authenticated users to inject arbit…EPSS 0.80%5.3CVE-2018-13297Synology drive server information exposure vulnerabilityInformation exposure vulnerability in SYNO.SynologyDrive.Files in Synology Drive before 1.1.2-10562 allows remote attackers to obtain sensitive syste…EPSS 1.5%6.1CVE-2026-42897Microsoft Exchange Server XSS enables spoofingMicrosoft Exchange Server and Exchange Server Subscription Edition fail to neutralize input during web page generation, a cross-site scripting flaw (…KEVEPSS 0.52%analysed6.1CVE-2025-48700Zimbra Classic UI stored XSS via crafted email HTMLZimbra Collaboration Suite Classic UI fails to properly sanitize HTML content in email messages, allowing crafted tag structures and attribute values…KEVEPSS 1.7%analysed6.1CVE-2025-66376Zimbra Collaboration Classic UI stored XSS via CSS @import in emailZimbra Collaboration Suite 10 before 10.0.18 and 10.1 before 10.1.13 allows stored cross-site scripting in the Classic UI through CSS @import directi…KEVEPSS 20%analysed

Source: NIST National Vulnerability Database (record CVE-2018-8921), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.