CVE-2023-43856: Dreamer CMS v4.1.3 was discovered to contain an arbitrary file read vulnerability via the component /admin/Tem

This month

HIGH 7.5REMOTEDOWNGRADE

CVE-2023-43856 is a high-severity flaw (CVSS 7.5) affecting dreamer cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-552
Published	2023-09-27
Last modified	2026-07-09

Publisher (CNA): MITRE · Vendor: iteachyou

Last updated 2026-07-09 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-09-27 15:19 UTCPublished CVE record published
2026-07-09 01:18 UTCUpdated Record last modified

iteachyou dreamer cms DOWNGRADE

Affected: 4.1.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1.3

1. Check installed version

apt-cache policy dreamer-cms || rpm -q dreamer-cms || dreamer-cms --version

2. No fixed release: DOWNGRADE to a release before 4.1.3 (Debian / Ubuntu)

apt-cache madison dreamer-cms sudo apt install dreamer-cms=<VERSION_BEFORE_4.1.3> sudo apt-mark hold dreamer-cms

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list dreamer-cms sudo dnf downgrade dreamer-cms-<VERSION_BEFORE_4.1.3> sudo dnf versionlock add dreamer-cms

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-43856?

dreamer cms: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-43856 being exploited?

CVE-2023-43856 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-43856 affect?

CVE-2023-43856 affects dreamer cms. Severity is high (CVSS 7.5). Dreamer CMS v4.1.3 was discovered to contain an arbitrary file read vulnerability via the component /admin/TemplateController.java.

How urgent is CVE-2023-43856?

Priority 47/100. High severity; Remotely exploitable, no login, no user action

Software pages

Java vulnerabilities

Related CVEs

CVE-2025-3977 MEDIUM 4.3 UPGRADE A vulnerability was found in iteachyou Dreamer CMS up to 4.1.3
CVE-2025-1548 LOW 3.5 DOWNGRADE A vulnerability was found in iteachyou Dreamer CMS 4.1.3
CVE-2025-1543 MEDIUM 4.3 DOWNGRADE A vulnerability, which was classified as problematic, has been found in iteachyou Dreamer CMS 4.1.3
CVE-2024-3311 MEDIUM 6.3 UPGRADE A vulnerability was found in Dreamer CMS up to 4.1.3.0
CVE-2024-3118 MEDIUM 6.3 UPGRADE A vulnerability, which was classified as critical, has been found in Dreamer CMS up to 4.1.3

References

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