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CVE-2020-11026: In affected versions of WordPress, files with a specially crafted name when uploaded to the Media section can lead to script execution upon accessing the file. This requires an authenticated user with

high Affects WordPress core. Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

In affected versions of WordPress, files with a specially crafted name when uploaded to the Media section can lead to script execution upon accessing the file. This requires an authenticated user with

Package
WordPress core WordPress
Affected versions
>=3.7 and <3.7.33 or >=3.8 and <3.8.33 or >=3.9 and <3.9.31 or >=4.0 and <4.0.30 or >=4.1 and <4.1.30 or >=4.2 and <4.2.27 or >=4.3 and <4.3.23 or >=4.4 and <4.4.22 or >=4.5 and <4.5.21 or >=4.6 and <4.6.18 or >=4.7 and <4.7.17 or >=4.8 and <4.8.13 or >=4.9 and <4.9.14 or >=5.0 and <5.0.9 or >=5.1 and <5.1.5 or >=5.2 and <5.2.6 or >=5.3 and <5.3.3 or =5.4
Fixed in
3.7.33, 3.8.33, 3.9.31, 4.0.30, 4.1.30, 4.2.27, 4.3.23, 4.4.22, 4.5.21, 4.6.18, 4.7.17, 4.8.13, 4.9.14, 5.0.9, 5.1.5, 5.2.6, 5.3.3
Severity
high  CVSS 8.7
Exploitation
not on CISA KEV · EPSS 2% (81.6th percentile)
Published
2020-04-30
Source
nvd

References

CWE-707CWE-79
NVD recordWordPress core advisories

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# 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.

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