phpwarden
FeaturesComparePricingAdvisoriesBlogDocsChangelogLog in
Log inStart free

CVE-2021-24495: The Marmoset Viewer WordPress plugin before 1.9.3 does not property sanitize, validate or escape the 'id' parameter before outputting back in the page, leading to a reflected Cross-Site Scripting issu

medium Affects marmoset-viewer (WordPress plugin). Feed 2026.10.29.4, updated 2026-10-29; published ; advisory modified .

The Marmoset Viewer WordPress plugin before 1.9.3 does not property sanitize, validate or escape the 'id' parameter before outputting back in the page, leading to a reflected Cross-Site Scripting issu

Package
marmoset-viewer (WordPress plugin) WordPress
Affected versions
<1.9.3
Fixed in
1.9.3
Severity
medium  CVSS 6.1
Exploitation
not on CISA KEV · EPSS 3% (88.6th percentile)
Published
2021-08-09
Source
nvd

References

CWE-79
NVD recordmarmoset-viewer (WordPress plugin) advisories

Am I affected?

Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden wordpress /var/www/html

# or, without Composer
pipx install phpwarden   &&   phpwarden wordpress /var/www/html

Or keep it checked automatically with the GitHub Action or a nightly cron; see WordPress docs.

Install docs   How findings are ranked

Related advisories