CVE-2021-36454: Cross Site Scripting (XSS) vulnerability in Naviwebs Navigate Cms 2.9 via the navigate-quickse parameter to 1)

Routine

MEDIUM 5.4DOWNGRADE

CVE-2021-36454 is a medium-severity flaw (CVSS 5.4) affecting navigate cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting (XSS) vulnerability in Naviwebs Navigate Cms 2.9 via the navigate-quickse parameter to 1) backups\backups.php, 2) blocks\blocks.php, 3) brands\brands.php, 4) comments\comments.php, 5) coupons\coupons.php, 6) feeds\feeds.php, 7) functions\functions.php, 8) items\items.php, 9) menus\menus.php, 10) orders\orders.php, 11) payment_methods\payment_methods.php, 12) products\products.php, 13) profiles\profiles.php, 14) shipping_metho

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	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-08-06
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

2021-08-06 16:15 UTCPublished CVE record published
2026-06-17 03:58 UTCUpdated Record last modified

naviwebs navigate cms 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 navigate-cms || rpm -q navigate-cms || navigate-cms --version

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

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

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

dnf --showduplicates list navigate-cms sudo dnf downgrade navigate-cms-<VERSION_BEFORE_2.9> sudo dnf versionlock add navigate-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-2021-36454?

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

Is CVE-2021-36454 being exploited?

CVE-2021-36454 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-2021-36454 affect?

CVE-2021-36454 affects navigate cms. Severity is medium (CVSS 5.4). Cross Site Scripting (XSS) vulnerability in Naviwebs Navigate Cms 2.9 via the navigate-quickse parameter to 1) backups\backups.php, 2) blocks\blocks.php, 3) brands\brands.php, 4) comments\comments.php, 5) coupons\coupons.php, 6) feeds\feeds

How urgent is CVE-2021-36454?

Priority 35/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2022-28117 MEDIUM 4.9 DOWNGRADE A Server-Side Request Forgery (SSRF) in feed_parser class of Navigate CMS v2.9.4 allows remote attackers to fo
CVE-2021-44299 MEDIUM 5.4 DOWNGRADE A reflected cross-site scripting (XSS) vulnerability in \lib\packages\themes\themes.php of Navigate CMS v2.9.4
CVE-2021-36455 HIGH 8.8 DOWNGRADE SQL Injection vulnerability in Naviwebs Navigate CMS 2.9 via the quicksearch parameter in \lib\packages\commen
CVE-2020-23711 CRITICAL 9.8 DOWNGRADE SQL Injection vulnerability in NavigateCMS 2.9 via the URL encoded GET input category in navigate.php.

References

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