What is CVE-2023-43856?

CVE-2023-43856 is a high-severity vulnerability in Iteachyou Dreamer Cms, classified under Files or Directories Accessible to External Parties. CVSS score: 7.5/10. Published 2023-09-27.

How severe is CVE-2023-43856?

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

Vulnerability in Iteachyou Dreamer Cms

CVE-2023-43856

Dreamer CMS v4.1.3 was discovered to contain an arbitrary file read vulnerability via the component /admin/TemplateController.java.

Published 2023-09-27 · last modified 2026-07-09.

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: 0.010 (59.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.010 · change: +0.002

Affected products

Iteachyou Dreamer Cms — versions 4.1.3

Weakness classification (CWE)

CWE-552 — Files or Directories Accessible to External Parties

References

cms.iteachyou.cc/ (Product)
af854a3a-2127-422b-91ae-364da2661108 (Broken Link, Not Applicable)
github.com/yux1azhengye (Not Applicable)
github.com/yux1azhengye/mycve/blob/main/DreamerCMS arbitrary file reading.pdf (Broken Link)

Frequently asked questions

What is CVE-2023-43856?: CVE-2023-43856 is a high-severity vulnerability in Iteachyou Dreamer Cms, classified under Files or Directories Accessible to External Parties. CVSS score: 7.5/10. Published 2023-09-27.
How severe is CVE-2023-43856?: High severity. CVSS v3 base score is 7.5 out of 10.