CVE-2026-22034CWE-636

Snuffleupagus vulnerable to RCE on instances with upload validation enabled but without the VLD package

Critical · published January 8, 2026

CVSS v4.0
9.2
EPSS
1%
Percentile
53.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.2 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00714 · 53.1th percentile
Weakness
CWE-636 · Not Failing Securely ('Failing Open')
Published
2026-01-08T14:49Z
EPSS history
Timeline
  • 08 JAN 14:49Z
    Snuffleupagus vulnerable to RCE on instances with upload validation enabled but without the VLD package
    cvelistv5