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CVE-2026-104890: Kunstmaan CMS: MediaBundle extension blacklist bypass allows authenticated administrators to upload executable PHP files leading to remote code execution

high Affects kunstmaan/bundles-cms, kunstmaan/media-bundle. Feed 2026.10.29.3, updated 2026-10-29; published .

Kunstmaan CMS: MediaBundle extension blacklist bypass allows authenticated administrators to upload executable PHP files leading to remote code execution

Package
kunstmaan/bundles-cms Composer
Affected versions
<7.3.2
Fixed in
7.3.2
Severity
high  CVSS 7.2
Exploitation
not on CISA KEV · EPSS 0% (35.9th percentile)
Published
2026-10-07
Source
osv.dev

References

Kunstmaan CMS: MediaBundle extension blacklist bypass allows authenticated administrators to upload executable PHP files leading to remote code execution

Package
kunstmaan/media-bundle Composer
Affected versions
<7.3.2
Fixed in
7.3.2
Severity
high  CVSS 7.2
Exploitation
not on CISA KEV · EPSS 0% (35.9th percentile)
Published
2026-10-07
Source
osv.dev

References

CWE-434
NVD recordkunstmaan/bundles-cms advisorieskunstmaan/media-bundle advisories

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