What is CVE-2023-34878?

CVE-2023-34878 is a high-severity vulnerability in Ujcms, classified under Observable Discrepancy. CVSS score: 7.5/10. Published 2023-06-14.

How severe is CVE-2023-34878?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Ujcms

CVE-2023-34878

An issue was discovered in Ujcms v6.0.2 allows attackers to gain sensitive information via the dir parameter to /api/backend/core/web-file-html/download-zip.

Published 2023-06-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (51.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Ujcms — versions 6.0.2

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

References

github.com/ujcms/ujcms/issues/6 (Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2023-34878?: CVE-2023-34878 is a high-severity vulnerability in Ujcms, classified under Observable Discrepancy. CVSS score: 7.5/10. Published 2023-06-14.
How severe is CVE-2023-34878?: High severity. CVSS v3 base score is 7.5 out of 10.