CVE-2022-22686

Severity: high (CVSS 8.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-07-26 · updated 2026-06-17
Weakness: CWE-352

Description

Cross-Site Request Forgery (CSRF) vulnerability in webapi component in Synology Calendar before 2.3.4-0631 allows remote authenticated users to hijack the authentication of administrators via unspecified vectors.

Affected products

Synology Calendar: before 2.3.4-0631 — fixed in 2.3.4-0631

How to fix

Upgrade to a fixed version: Synology Calendar 2.3.4-0631. Check the vendor advisory for mitigations.

References

https://www.synology.com/security/advisory/Synology_SA_20_07
https://www.synology.com/security/advisory/Synology_SA_20_07

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