What is CVE-2018-13299?

CVE-2018-13299 is a medium-severity vulnerability in Synology Calendar, classified under Relative Path Traversal. CVSS score: 4.3/10. Published 2019-04-01.

How severe is CVE-2018-13299?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Path Traversal in Synology Calendar

CVE-2018-13299

Relative path traversal vulnerability in Attachment Uploader in Synology Calendar before 2.2.2-0532 allows remote authenticated users to upload arbitrary files via the filename parameter.

Published 2019-04-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.014 (70.8th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Synology Calendar — versions unspecified

Weakness classification (CWE)

References

www.synology.com/security/advisory/Synology_SA_18_54 (Vendor Advisory)

Frequently asked questions

What is CVE-2018-13299?: CVE-2018-13299 is a medium-severity vulnerability in Synology Calendar, classified under Relative Path Traversal. CVSS score: 4.3/10. Published 2019-04-01.
How severe is CVE-2018-13299?: Medium severity. CVSS v3 base score is 4.3 out of 10.