CVE-2020-14067: The install_from_hash functionality in Navigate CMS 2.9 does not consider the .phtml extension when examining

This month

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2020-14067 is a critical-severity flaw (CVSS 9.8) affecting navigatecms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The install_from_hash functionality in Navigate CMS 2.9 does not consider the .phtml extension when examining files within a ZIP archive that may contain PHP code, in check_upload in lib/packages/extensions/extension.class.php and lib/packages/themes/theme.class.php.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-434
Published	2020-06-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: naviwebs

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

Am I affected?

Timeline

2020-06-15 01:15 UTCPublished CVE record published
2026-06-17 02:54 UTCUpdated Record last modified

naviwebs navigatecms DOWNGRADE

Affected: 2.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.9 (Debian / Ubuntu)

apt-cache madison navigatecms sudo apt install navigatecms=<VERSION_BEFORE_2.9> sudo apt-mark hold navigatecms

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

dnf --showduplicates list navigatecms sudo dnf downgrade navigatecms-<VERSION_BEFORE_2.9> sudo dnf versionlock add navigatecms

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-2020-14067?

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

Is CVE-2020-14067 being exploited?

CVE-2020-14067 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-2020-14067 affect?

CVE-2020-14067 affects navigatecms. Severity is critical (CVSS 9.8). The install_from_hash functionality in Navigate CMS 2.9 does not consider the .phtml extension when examining files within a ZIP archive that may contain PHP code, in check_upload in lib/packages/extensions/extension.class.php and lib/packa

How urgent is CVE-2020-14067?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

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References

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