CRITICAL 9.0 NVD

CVE-2026-40541

An improper neutralization of input during web page generation ('Cross-site Scripting') vulnerability in extract domain in Synology Chat Server before 2.4.5-221

An improper neutralization of input during web page generation ('Cross-site Scripting') vulnerability in extract domain in Synology Chat Server before 2.4.5-22148 allows remote authenticated users, via a UI interaction, to read or write arbitrary files and conduct denial-of-service attacks in DSM.

References

https://www.synology.com/en-global/security/advisory/Synology_SA_26_10

Published: 2026-08-28 · Source: NVD · Feed updated: 2026-08-28

This critical severity vulnerability with a CVSS score of 9.0 was published on 2026-08-28 via NVD.

Risk Timeline

CVE Disclosed2026-08-28 · -1 days ago

Remediation Resources

Official Advisory

www.synology.com/en-global/security/advisory/Synology_SA_26_10

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