CVE-2020-10578: An arbitrary file read vulnerability exists in system/controller/backend/template.php in QCMS v3.0.1.

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2020-10578 is a high-severity flaw (CVSS 7.5) affecting qcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An arbitrary file read vulnerability exists in system/controller/backend/template.php in QCMS v3.0.1.

Why this priority

High severity
Public exploit reference
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	1.2% (top 33%)
CISA exploited list	No
Published	2020-03-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: q-cms

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-03-14 20:15 UTCPublished CVE record published
2026-06-17 02:48 UTCUpdated Record last modified

q-cms qcms DOWNGRADE

Affected: 3.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0.1

1. Check installed version

apt-cache policy qcms || rpm -q qcms || qcms --version

2. No fixed release: DOWNGRADE to a release before 3.0.1 (Debian / Ubuntu)

apt-cache madison qcms sudo apt install qcms=<VERSION_BEFORE_3.0.1> sudo apt-mark hold qcms

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

dnf --showduplicates list qcms sudo dnf downgrade qcms-<VERSION_BEFORE_3.0.1> sudo dnf versionlock add qcms

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-2020-10578?

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

Is CVE-2020-10578 being exploited?

CVE-2020-10578 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-2020-10578 affect?

CVE-2020-10578 affects qcms. Severity is high (CVSS 7.5). An arbitrary file read vulnerability exists in system/controller/backend/template.php in QCMS v3.0.1.

How urgent is CVE-2020-10578?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-50233 MEDIUM 6.5 DOWNGRADE A vulnerability in QCMS version 6.0.5 allows authenticated users to read arbitrary files from the server due t
CVE-2018-8070 MEDIUM 5.4 DOWNGRADE QCMS version 3.0 has XSS via the title parameter to the /guest/index.html URI.
CVE-2018-8069 MEDIUM 5.4 DOWNGRADE QCMS version 3.0 has XSS via the webname parameter to the /backend/system.html URI.
CVE-2018-14978 HIGH 8.8 DOWNGRADE An issue was discovered in QCMS 3.0.1
CVE-2018-14977 MEDIUM 6.1 DOWNGRADE An issue was discovered in QCMS 3.0.1

References

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