What is CVE-2018-5259?

CVE-2018-5259 is a high-severity vulnerability in Discuz Discuzx. CVSS score: 8.8/10. Published 2018-01-08.

How severe is CVE-2018-5259?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Discuz Discuzx

CVE-2018-5259

Discuz! DiscuzX X3.4 allows remote authenticated users to bypass intended attachment-deletion restrictions via a modified aid parameter.

Published 2018-01-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.020 (79.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000

Affected products

Discuz Discuzx — versions x3.4

References

gitee.com/ComsenzDiscuz/DiscuzX/issues/IH8SA (Third Party Advisory)
www.whsgwl.net/text.php (Third Party Advisory)

Frequently asked questions

What is CVE-2018-5259?: CVE-2018-5259 is a high-severity vulnerability in Discuz Discuzx. CVSS score: 8.8/10. Published 2018-01-08.
How severe is CVE-2018-5259?: High severity. CVSS v3 base score is 8.8 out of 10.