CVE-2026-28695
PHP vulnerability analysis and mitigation

Craft is a content management system (CMS). There is an authenticated admin RCE in Craft CMS 5.8.21 via Server-Side Template Injection using the create() Twig function combined with a Symfony Process gadget chain. The create() Twig function exposes Craft::createObject(), which allows instantiation of arbitrary PHP classes with constructor arguments. Combined with the bundled symfony/process dependency, this enables RCE. This bypasses the fix implemented for CVE-2025-57811 (patched in 5.8.7). This vulnerability is fixed in 5.9.0-beta.1 and 4.17.0-beta.1.


SourceNVD

Related PHP vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-40261HIGH8.8
  • PHPPHP
  • composer
NoYesApr 15, 2026
CVE-2026-40176HIGH7.8
  • PHPPHP
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NoYesApr 15, 2026
GHSA-xp4f-g2cm-rhg7MEDIUM6.9
  • PHPPHP
  • pocketmine/pocketmine-mp
NoYesApr 15, 2026
CVE-2026-40479MEDIUM5.4
  • PHPPHP
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CVE-2026-40486MEDIUM4.3
  • PHPPHP
  • kimai/kimai
NoYesApr 15, 2026

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