CVE-2020-23655: NavigateCMS 2.9 is affected by Cross Site Scripting (XSS) on module "Configuration."

Routine

MEDIUM 5.4DOWNGRADE

CVE-2020-23655 is a medium-severity flaw (CVSS 5.4) affecting navigatecms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

NavigateCMS 2.9 is affected by Cross Site Scripting (XSS) on module "Configuration."

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-08-26
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

2020-08-26 17:15 UTCPublished CVE record published
2026-06-17 03:04 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-2020-23655?

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

Is CVE-2020-23655 being exploited?

CVE-2020-23655 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-2020-23655 affect?

CVE-2020-23655 affects navigatecms. Severity is medium (CVSS 5.4). NavigateCMS 2.9 is affected by Cross Site Scripting (XSS) on module "Configuration."

How urgent is CVE-2020-23655?

Priority 35/100. Public exploit reference

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References

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