PHP
CVE-2026-22034
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionGitHub Advisory
Snuffleupagus is a module that raises the cost of attacks against website by killing bug classes and providing a virtual patching system. On deployments of Snuffleupagus prior to version 0.13.0 with the non-default upload validation feature enabled and configured to use one of the upstream validation scripts based on Vulcan Logic Disassembler (VLD) while the VLD extension is not available to the CLI SAPI, all files from multipart POST requests are evaluated as PHP code. The issue was fixed in version 0.13.0.
AnalysisAI
Snuffleupagus PHP security module before 0.13.0 can be bypassed when upload validation uses VLD-based scripts without the VLD extension installed. This disables the upload security check entirely, allowing malicious PHP file uploads. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Snuffleupagus version prior to 0.13.0 with non-default upload validation feature enabled, configured to use VLD-based upstream validation scripts, while VLD extension unavailable to CLI SAPI. Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 9.8 (Critical). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker targets a PHP application protected by Snuffleupagus with VLD-based upload validation. Since VLD is not installed, all uploads pass validation. … |
| Remediation | Update to Snuffleupagus 0.13.0. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Within 24 hours: Identify all affected systems and apply vendor patches immediately. …
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